Christopher Chamblin was convicted by a jury late Friday of 10 sex-related offenses stemming from allegations that he raped two young neighbors more than 30 years ago in Silver Spring.

Chamblin, 49, who had been living in South Florida, faces up to three life sentences for each of the three first-degree rape convictions, according to prosecutors. The crimes stretched over several years, when he was between 14 and 16 years old, and when his two victims, who are sisters, were between 5 and 9 years old, said John Maloney, a Montgomery County Deputy State’s Attorney.

The trial lasted a week. Sentencing is set for August.

“The state is quite pleased that this defendant is finally being held accountable for the suffering he inflicted on these innocent girls many years ago,” Maloney said.