Four more people, all 16-year-olds, have been arrested in connection with the abduction and killing of Woodbridge Senior High School senior Kenny J. Diaz, Prince William County police said Thursday.

According to county police and court papers, a friend of Diaz’s who was looking to buy drugs visited Diandra J. Samuels, 19, on Sept. 12 at her apartment in the Glen Arbor complex in the 14300 block of Bellona Road. Samuels allegedly took the young man’s cash at gunpoint.

Nine days later, authorities said, Diaz and three 16-year-olds from Woodbridge, went back to the apartment complex to rob Samuels in retaliation.

Samuels and others were waiting. When one of the 16-year-olds pulled a handgun, he was confronted by Dominic G. Smith, 26, who took the gun away, police said.

“The encounter escalated when the handgun was displayed causing the group to disperse and ultimately leading to the abduction, stabbing, and death of Kenny Diaz,” police said in a statement.

Kenny Joseph Diaz (Family photo)

Samuels’s group consisted of five women and three men, ages 19 to 32, who allegedly abducted Diaz and drove him to a nearby park where he was fatally stabbed. Samuels has been charged with murder.

The juveniles were charged with attempted armed robbery, use of a firearm in commission of a felony and conspiracy to commit a felony. One of the 16-year-old male juveniles arrested was not present during the encounter at Samuels’s residence, but he is connected to the incident and was charged with the same counts, police said.

Police believe they have arrested and charged all those directly involved in the incident, said police spokesman Jonathan Perok.