A New Orleans teenager charged in the April murders of a father and son in their Metairie home was rebooked Friday on an accusation that he was masturbating in his Jefferson Parish jail cell while looking at a guard.

The Jefferson Parish Sheriff’s Office booked Dexter Allen, 17, on one count of obscenity, which is punishable by up to three years in prison and a fine of $2,500.

Allen is in jail awaiting trial on two counts of second-degree murder in the deaths of David Pence, 56, and Nicholas Pence, 25, who were fatally shot just before midnight April 22 in the living room of their Clifford Drive home during a break-in.

On Friday, the Sheriff’s Office said in a report, Allen was gazing at a guard while stroking his penis until ordered to stop. The exposure of one’s genitals in jail in a manner “that is patently offensive” qualifies as obscenity under Louisiana law.

Allen and a co-defendant, 18-year-old Haraquon Degruy, were in court on the double murder case Monday, but the hearing was reset for Nov. 17. Both have pleaded not guilty.

Degruy is due back in court Wednesday for a sanity hearing after her attorney, public defender Renee Bourg, filed a motion saying the defendant’s mother indicated that Degruy was “diagnosed as mentally disabled” when she was 13. The motion said Degruy was placed on suicide watch when she was first jailed following the two killings and that her “behavior with counsel suggests mood swings and shifts in comprehension.”

Police allege that Allen killed David and Nicholas Pence with a 12-gauge shotgun in their home while he and Degruy were on a car-burglary spree. Allen and Degruy were arrested in New Orleans East within a couple of days of the killings after leading police on a chase in a stolen SUV.

Aside from his criminal charges in Jefferson, Allen faces additional ones in New Orleans that are not directly related to the killings of the Pences.

Allen and Degruy each face a mandatory sentence of life in prison if convicted as charged in the murders of the Pences.