MERRIMACK — Fire officials say an adult male drowned in a backyard pool on Gail Road in Merrimack Wednesday afternoon.

Merrimack Fire Capt. Jason Marsella said firefighters were dispatched to a home at 11 Gail Road around 5:13 p.m. Wednesday to investigate a report of a drowning.

Upon arrival, fire crews found an adult male unresponsive in a 52-inch-deep above ground pool, they said.

The man, whose name was not released Wednesday, was pulled out and CPR was performed. After repeated resuscitation attempts, which failed to produce a pulse, efforts to revive the man were halted and he was pronounced dead.

Merrimack police remained at the scene as of 7 p.m. Wednesday, Marsella said.

According to an online database, the property at 11 Gail Road in Merrimack is owned by a Susan Martin.

No further information was available Wednesday night.