Amer Pelley News Today : Breaking News, Live Updates & Top Stories | Vimarsana

captioning sponsored by cbs this is the "cbs evening news" with scott pelley. >> pelley: good evening. three college classmates of boston bombing suspect dzhokar tsarnaev are under arrest tonight. they are not charged in the attack at the marathon. they're accused of interfering with the investigation to protect their friend. two of them from the russian republic of kazakhstan are in this photo with tsarnaev. on the left is azamat ta tazhayakov. in the middle, dias kadyrbayev. they are charged with conspiracy to obstruct justice by getting rid of evidence. the third, robel phillipos,...

released this video of the two men wanted in the marathon bombings, dias kadyrbayev and phillipos began to realize one of them might be their dzhokar tsarnaev. police say they went to tsarnaev's dorm room at the university of massachusetts dartmouth and found a backpack with fireworks that had been emptied of their powder and a jar of vaseline. the documents say kadyrbayev knew then tsarnaev was in fact one of the marathon bombers and "decided to remove the backpack from the room in order to help his friend." he also took tsarnaev's laptop computer. robert staal is kadyrbayev's attor...

tsarnaev are under arrest tonight. they are not charged in the attack at the marathon. they're accused of interfering with the investigation to protect their friend. two of them from the russian republic of kazakhstan are in this photo with tsarnaev. on the left is azamat tazhayak tazhayakov. in the middle, dias kadyrbayev. they are charged with conspiracy to obstruct justice by getting rid of evidence. ed third, robel phillipos, is a u.s. citizen charged with lying to investigators. elaine quijano was there as they came into court today. elaine. >> reporter: scott, they were led int...