A Prince George's County grand jury yesterday indicted 15-year-old Terrance G. Johnson in connection with the fatal shooting last month of two Prince George's County police officers.

The 23-members grand jury returned an eight-count indictment, including two counts of first-degree murder, against the youth, who was charged as an adult with slaying Patrolman Albert M. Claggett and his fellow officer, James Brian Swart.

Claggett and Swart were shot to death early in the morning June 26 in the basement of the Hyattsville police station, where Johnson was being booked with his older brother on suspicion of stealing coins from a laundry machine. Police investigators have said that Johnson allegedly ripped a pistol from Claggett's holster and opened fire.

The charges in the indictment carry possible maximum sentences of imprisonment for two life terms plus 28 years. The death penalty is not applicable because it did not go into effect in Maryland until July 1. In addition to the murder counts, the grand jury indicted Johnson on three counts of using a handgun, one count of carrying a handgun, one count of assault with intent to murder and one count of escape.

No date has been set yet for the trial.

Johnson, who lives with his mother at 4241 58th Ave., Bladenbsurg, is being held in lieu of bond, which was set at $1 million.