Vancouver police had to deploy its explosives team after a woman dug up a grenade in a city park on Sunday morning.

A woman was digging in a small garden by Hinge Park, located near the seawall in Olympic Village, when she unearthed an “old grenade,” according to a Sunday statement from the Vancouver Police Department (VPD).

Explosive technicians analyzed the grenade, which police say appeared active, and safely detonated it using a small explosive charge.

The park, which includes a playground and an off-leash dog park, was taped off for much of Sunday morning. Around a dozen VPD officers and park rangers could be seen.

A CBC News reporter in the area described hearing a loud bang shortly before 12:30 p.m. PT, with police telling another reporter that there was a “suspicious package” in the park.