BOSTON (CBS/AP) — The two teens accused of shooting and killing another teen while he was riding his bicycle in Dorchester were ordered held without bail Monday.

Dushawn Taylor-Gennis, 16, and 14-year-old Raeshawn Moody pleaded not guilty at their arraignment on murder and firearms charges in a packed courtroom in Dorchester District Court.

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Dushawn Taylor-Gennis and Raeshawn Moody (WBZ-TV)

Dushawn Taylor-Gennis and Raeshawn Moody (WBZ-TV)

Both will be tried as adults, even though Moody is only in eighth grade. Neither teen was able to be seen in the courtroom because both hid behind a door.

The boys are charged with killing Jonathan Dos Santos, 16, on Wednesday night.

Boston Police shut down Fuller Street after the shooting June 10. (WBZ-TV)

Boston Police shut down Fuller Street after the shooting June 10. (WBZ-TV)

Prosecutor Jennifer Hickman said Taylor-Gennis and Moody can be seen in surveillance video essentially setting up a trap for Dos Santos before shooting at him five times at the corner of Washington and Fuller Streets.

Hickman said Dos Santos was hit in the back and tried to ride his bike to a nearby business to get help as Taylor-Gennis and Moody ran away.

Defense lawyers had asked that the teens be released to their parents, saying their mothers cooperated with police. A lawyer for Moody said police have the wrong person.

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Relatives of both the victim and suspects packed the courtroom in Dorchester District Court Monday. (WBZ-TV)

Relatives of both the victim and suspects packed the courtroom in Dorchester District Court Monday. (WBZ-TV)

The suspects’ mothers helped turn the boys in over the weekend. One of the mothers drove her son into Boston so he could be arrested and the other mother told the other boy by phone that he had to go to police.

“It wasn’t an easy decision, but it was the best for the welfare of those young children,” Police Commissioner Bill Evans told WBZ-TV Monday.

Evans said the three lived in the same neighborhood and knew each other. A motive has not been revealed.

The Boston Globe reported that detectives are looking into whether the killing was gang-related and that Dos Santos had recently confided to a basketball coach that other teens were pressuring him to join a gang.

Under Massachusetts law, juveniles charged with murder are exposed to the same penalties as adults and their cases are open to the public, Suffolk County District Attorney Dan Conley’s office said.

WBZ NewsRadio 1030’s Ben Parker reports

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