Dzhokhar and Tamerlan Tsarnaev: Boston bomb suspects – pictures

Public Radio International's Robin Young tweeted this photo from @hereandnowrobin of Dzhokhar Tsarnaev at her nephew's high school graduation ceremony. Photograph: Robin Young/Twitter Photograph: Robin Young/Twitter

In this February 17, 2010, photo, Tamerlan Tsarnaev, smiles after accepting the trophy for winning the 2010 New England Golden Gloves Championship Photograph: Julia Malakie/AP

Boston police released this photo of Dzhokhar Tsarnaev in a 7-11 in Cambridge Photograph: Boston police department

Dzhokhar Tsarnaev Photograph: Rex Features Photograph: Rex Features/Rex Features

The Boston police department released this photo of Dzhokhar Tsarnaev, 19, who is considered 'armed and dangerous'. Photograph: Boston police department

One suspect – believed to be Dzhokhar Tsarnaev – before the bombing Photograph: Handout/Getty Images

A suspect in the Boston Marathon bombing walks near the marathon finish line. This suspect is believed to be Tamerlan Tsarnaev, who was killed late Thursday night. Photograph: FBI/Getty Images

One of the two Boston bombing suspects before the bombing Photograph: FBI/Corbis

David Green snapped an iPhone photo shortly after the Boston Marathon bombings Monday apparently showing the white-capped suspect running from the scene of the blasts Photograph: ZUMA/ZUMA

An uncropped version of David Green's photo appears to show both the suspect and the blast farther down the street Photograph: Rex Features/ZUMA

The two suspects together before the bombing Photograph: Xinhua/FBI/Corbis

The suspects together, walking through the crowd in Boston before the explosions Photograph: FBI/AP