JAHAR'S FINGERPRINT WASN'T DETECTED FROM HIS BACKPACK.

Is there any physical evidence? 
Jahar had a Backpack barehand. If He is a criminal, his fingerprint should be detected.
His fingerprint isn't detected.

There aren't the pictures that Jahar wears gloves. There aren't the pictures that Jahar put a backpack in the crime scene. These are similar about Tamerlan.

No evidence, but arrest, then it's a criminal act for Jahar.
An unfair arrest, libel, human rights violations Jahar is a victim.

How about Tamerlan? 
Possibility of the murder for an innocent guy is very high. 

Jahar's side should sue court of law, police, FBI and so on.