DURHAM — Police on Thursday morning arrested the third of four teens accused in a double shooting Sunday afternoon at the Green Flea Market on Pettigrew Street.

Officers found Rene Moreno, 17, of Faucette Avenue at about 8 a.m., police spokeswoman Kammie Michael said. He is charged with attempted murder and two counts of assault with a deadly weapon with intent to kill and inflicting serious injury.

Moreno, who also goes by Moreno-Lopez, also was charged with two counts of improperly storing a firearm in connection with two incidents involving a 15-year-old boy who has been accused of fatally shooting his 13-year-old sister.

In May, the 15-year-old, whose name has not been released, was charged with bringing a gun to school. On Nov. 1, police accused him of shooting 13-year-old Emily Lopez, who died nearly a week later of a gunshot wound to the head.

Neighbors said the 15-year-old was Emily Lopez’s brother. On Thursday, police said she and Moreno were siblings and lived in the same house.

Late Wednesday, police arrested two other teens wanted in the shooting at the flea market. Alexander Cardona, 17, of West Trinity Avenue, and Sergio Adrian Barboza, 17, of Sudbury Drive face the same charges as Moreno.

Also suspected in the shooting, but still at large Thursday was Irving Martinez, 17, of Maplewood Drive.