, dzokhar says.long time. they're giving me rice and chicken now. everything is fine. >> reporter: for zabedda, her son's calm came as a surprise. >> i thought he would scream, what's going on, you know? he would ask the world, what's going on. but mama -- instead, he was just calming me down. you know what i mean? >> reporter: tsarnaev has been granted one call per month to his parents in dagat stan. tsarnaev has stopped cooperating with fbi and federal prosecutors. but sources say before being read his rights, he did confess to the bombings. dzokhar said he and his brother tamerlan wanted to avenge the killing of muslims by u.s. troops overseas. a similar claim had been found written on the boat dzokhar had used as a hiding place before he was captured. >> he has already been charged with using a weapon of mass destruction. and more charges are coming. they may push for the death penalty. >>> photos of the sandy hook massacre may be prevented from being released. >> reporter: lawmakers are worried

it is coming from a taped conversation dzokhar made to his mother. he spoke to her from a prison hospital where he is recovering from multiple gunshot wounds. he is heard calming his mother down, and telling her not to speak about the case. >> i know that my kids did not do it. i felt like he would scream that, you know, what's going on? you know? what's going on? he would ask, the world, what's going on? but mama -- instead, he was just calming me down. you know what i mean? >> reporter: tsarnaev is being granted one phone call a month to his parents. he reportedly confessed to the bombings before he stopped cooperating with investigators. >>> meanwhile, boston marathon bombing victims. erika brannock thanked her support team but asked for one final favor. >> reporter: well, vic. erika asked for help, finding the woman who saved her life at the marathon finish lineful she only remembered her as "joan "from california. >> reporter: erika branock and her sister were in boston, waiting for their mother to cross the finish line when the bomb went off. e