Three more arrested in connection with McKinney teen's murder

Mario Garcia, Marco Hernandez and an unnamed juvenile were arrested for felony robbery. Christopher Sterkes is in jail for murder

ANNA, Tex. (KXII) - Three more people were arrested Tuesday in connection with the murder of a McKinney teen.

15-year-old Alejandro Camacho was shot and killed on Friday.

18-year-old Christopher Sterkes was arrested Monday and jailed on a $1 million bond for murder.

Tuesday, Anna police say 18-year-old Mario Garcia, 17-year-old Marco Hernandez and an unnamed juvenile were arrested for felony robbery.

Police say Hernandez set up a meeting with Sterkes to buy marijuana, but instead planned to rob him with the other suspects.

During the robbery, Sterkes got out of the vehicle they were in and fired a gun into car, hitting Camacho.

Garcia drove Camacho to a McKinney hospital where he was pronounced dead.