BOSTON (AP) Jurors in the Boston Marathon trial have watched a video prosecutors say shows the movements of the bombers before and after two explosions ripped through crowds near the finish line.

The video was compiled by the FBI using surveillance video from stores and restaurants along the route. It was shown Monday during the federal death penalty trial of Dzhokhar Tsarnaev (joh-HAHR' tsahr-NEYE'-ehv).

The video shows Tsarnaev walking with his brother, Tamerlan, each carrying a backpack.

It shows Dzhokhar Tsarnaev dip his shoulder, then shows the backpack at his feet. Then, all heads turn and look toward the sound of an explosion. Dzhokhar doesn't look and begins walking in the opposite direction.

Seconds later, another bomb explodes. After that, the video shows Dzhokhar running in a crowd of people.