Dzhokhar Tsarnaev, identified as Suspect 2, was captured in a Boston suburb on April 19 after a manhunt that shut down the city. 
From left, Azamat Tazhayakov and Dias Kadyrbayev went with Boston bombing suspect Dzhokhar Tsarnaev to Times Square in this photo taken from the social media site VK.com. A federal grand jury charged Tazhayakov and Kadyrbayev with obstructing justice and conspiracy to obstruct justice on Thursday, August 8. Both had been arrested and charged in May, but only with the conspiracy count. See all photography related to the Boston bombings. 
Robel Phillipos, a U.S. citizen, was also arrested on May 1. He was charged with lying to federal agents about the bombing, according to court papers. 
Phillipos, Tazhayakov and Kadyrbayev are accused of removing items from Tsarnaev's dorm room after the April 15 bombings. The items they took included a backpack containing fireworks that had been "opened and emptied of powder," according to the affidavit. 
Kadybayev, left, poses with Dzhokhar Tsamaev in a picture taken from the social media site VK.com. 
The FBI released photos and video on April 18 of two men identified as Suspect 1 and Suspect 2 in the deadly bombings at the Boston Marathon. They were later identified as Dzhokhar Tsarnaev, 19, and his brother Tamerlan Tsarnaev, 26. 
Police say the dead suspect, Tamerlan Tsarnaev, is the man the FBI identified as Suspect 1. He was killed during the shootout with police in Watertown, Massachusetts, early April 19. He is pictured here at the 2010 New England Golden Gloves. 
Boston Police released surveillance images of Dzhokhar Tsarnaev at a convenience store on April 19. 
The FBI tweeted this photo on April 19 and urged Watertown residents to stay indoors as they searched for the second suspect. 
The FBI released photos and video on April 18 of two men it called suspects in the deadly bombings and pleaded for public help in identifying them. The men were photographed walking together near the finish line. 
A man identified as Suspect 2 appeared in this photograph by bystander David Green, who took the photo after completing the Boston Marathon. Green submitted the photo to the FBI, he told Piers Morgan in an interview. 
The man identified as Suspect 2 appears in a tighter crop of David Green's photo. 
Authorities later identified Suspect 1 as Tamerlan Tsarnaev. 
Suspect 2 was identified as Dzhokhar Tsarnaev. 
Suspect 1 walks through the crowd. 
Suspect 1 walks through the crowd. 
Suspect 1 walks through the crowd. 
Both suspects are seen walking through the crowd. 
Suspect 2 walks through the crowd. 
Suspect 2 walks through the crowd. 
A photo released by the FBI highlights Suspect 2. 
A photo released by the FBI highlights Suspect 2. 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
- Lawyers say Dzhokhar Tsarnaev is "in near total isolation"
- They also say he's is banned from praying with other inmates and is rarely allowed outside cell
- U.S. attorney: Restrictions necessary because of his "continued desire to incite"
- His lawyers accuse the government of trying to limit attorney-client interaction
(CNN) -- Lawyers for Boston Marathon bombing suspect Dzhokhar Tsarnaev accused the government of imposing unduly harsh restrictions on their client in a motion filed Wednesday.
Tsarnaev is "in near total isolation," is banned from praying with other inmates and is allowed out of his cell only to meet with lawyers or spend short periods in an outdoor enclosure, court documents said.
Massachusetts U.S. Attorney Carmen Ortiz asked the attorney general for these special administrative measures after Tsarnaev had been in prison for four months.
Ortiz said the restrictions are necessary as part of what prosecutors call Tsarnaev's "continued desire to incite others to engage in violent jihad," according to the August memorandum included in the court filing.
Tamerlan's in-laws answer questions from grand jury
As evidence, prosecutors cite the 1,000 "unsolicited" letters the 19-year-old Chechnya-born American has received during his five-month incarceration. His lawyers say he has not responded to any of them.
Officer releases pics of 'real' Tsarnaev 
Tsarnaev's mother: 'My son is not guilty' 
Boston bombing survivor: I'm winning 
Amputee vets encourage bombing victims Tsarnaev has been at the Fort Devens prison facility an hour outside Boston after a brief hospitalization for wounds incurred during his capture on April 19. Dzhokhar Tsarnaev and his brother, Tamerlan, spent days on a highly publicized run after the marathon bombing on April 15.
His lawyers, Miriam Conrad and Judy Clarke, argue in court papers that the measures create "obstacles" that have a "dramatic chilling effect on the defense team's ability to prepare a thorough and vigorous defense."
Three friends of Boston bombing suspect plead not guilty
In their motion, Conrad and Clarke argue the measures "violate the First, Fifth and Sixth Amendments to the United States Constitution. The court therefore should declare that the SAMs are unlawful and order that they be vacated."
The restrictions are designed to limit the people with whom Tsarnaev is allowed to speak and what those people can then say to others. It also limits the kind of materials to which he has access. As an example, his lawyers said they were prevented from showing Tsarnaev family photos after prosecutors argued they were not specifically related to his defense. Prosecutors later relented.
Tsarnaev's lawyers accuse the government of trying to limit attorney-client interaction: "There is no basis whatsoever to suspect that appointed attorneys and those assisting them would intentionally pass dangerous communications to others."
Documents detail suspect's injuries
His lawyers also said Tsarnaev has done nothing during his incarceration to warrant such restrictions or to suggest he is dangerous, nor is there evidence the attack was "directed by others still at large or that Mr. Tsarnaev ever had operational authority to direct the activities of others" to whom he may want to communicate.
Special administrative measures are typically used in terrorism cases and other high-profile cases when authorities contend "there is a substantial risk that a prisoner's communications or contacts with persons could result in death or serious bodily injury to persons," according to court documents.
Tsarnaev is charged with 30 federal counts stemming from the attack, during which three people were killed and more than 250 were injured after a pair of home-made bombs exploded moments apart near the finish line of the Boston Marathon. A Massachusetts Institute of Technology police officer was killed three days later, triggering the massive manhunt that led to Tsarnaev's capture. His brother was shot and killed by police during the manhunt.
Tsarnaev has pleaded not guilty to all charges.
5 months after bombings: Sense of winning for survivor
CNN's Lawrence Crook III contributed to this report.
