lopes was listed in court papers as homeless at the time .
weymouth ( cbs ap ) — a man accused of fatally shooting a weymouth police officer with the officer ’s own gun and an innocent bystander could be arraigned tuesday on murder charges .
following a pretrial probation violation hearing on april 25 , lopes was permitted to remain free on the same conditions .
police officers and others lined a procession route monday afternoon as chesna ’s body was taken from the medical examiner ’s office in boston to a funeral home in weymouth .
chesna was trying to locate the driver of the vehicle , morrissey said , when he spotted lopes allegedly vandalizing a home .
that ’s when lopes hit chesna in the head and chest , morrissey said .
lopes was arrested by weymouth oct. 3 on charges of dealing cocaine at a beach party for minors and resisting arrest .
another officer who had arrived at the 20 - year - old brockton native accused of executing weymouth police officer michael chesna with chesna 's service weapon and then killing an innocent woman in the sanctity of her home yesterday had battled with department members and used a rock as a weapon before , according to court documents .
the conditions of lopes ' release included remaining drug- and alcohol - free , but court records indicate he failed to appear for a random drug screening on feb. 7 .