The top prosecutor in Orlando said he will review the circumstances that led to the fatal shooting of a Chechen immigrant during questioning by the FBI and other agents in Orlando about his ties to one of the Boston Marathon bombing suspects.

State Attorney Jeff Ashton said that he has received a preliminary report by the federal Department of Justice about their investigation into Ibragim Todashev's death last May.

Ashton said there is no schedule for when he will complete his review.

Todashev was killed while being questioned by FBI agents and police from Massachusetts and Florida. Officials originally said Todashev lunged at an FBI agent with a knife. They later said it was no longer clear what happened.

An investigation was being led by the FBI.

And two friends of the suspected Boston Marathon bomber have been indicted on federal charges of conspiracy to obstruct justice.

Dias Kadyrbayev and Azamat Tazhayakov  are accused of trying to dispose of evidence from Dzhokhar Tsarnaev's  dorm room. The two have been detained since they were initially charged in May.

Tazhayakov's attorney said his client did nothing wrong, and authorities are on a witch hunt.

Kadyrbayev's attorney said his client never knowingly disposed of evidence and he was horrified someone he knew was involved in the bombings.

Also Thursday, a hearing scheduled for Monday August 12 for a third Tsarnaev friend charged in the case, Robel Phillipos, was canceled. Phillipos is accused of lying to investigators. His attorneys said they're in talks that could resolve the case.