BOSTON (AP) — Jurors in the trial of Boston Marathon bomber Dzhokhar Tsarnaev (joh-HAHR’ tsahr-NEYE’-ehv) have heard a frantic call made by a police officer who discovered Massachusetts Institute of Technology Officer Sean Collier shot in his cruiser three days after the bombing.
Prosecutors say Tsarnaev and his brother, Tamerlan, killed Collier in a failed attempt to steal his gun as they tried to flee after the FBI released photos of them as suspects in the bombing.
On Wednesday, MIT Officer David Sacco described receiving a call from a resident who heard loud noises and saw an MIT police cruiser outside. After being unable to reach Collier, Sacco sent another officer to check on him.
The jury heard a recording of that officer yelling “Officer down! Officer down!” when he discovered Collier shot multiple times.
Dzhokhar Tsarnaev’s lawyer told the jury Tamerlan shot Collier.

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