A bomb squad removed a non-active grenade Thursday morning from Pittsburgh West Liberty K-5 in the city's Brookline neighborhood, according to Pittsburgh Public Schools.
Investigators confirmed police activity, which was visible when Chopper 11 flew over the scene, at the school shortly before 10 a.m.
Police later said that the Pittsburgh Bureau of Police Bomb Squad was called for a report that a student brought a hand grenade to the school, which was evacuated.
WPXI's Brandon Hudson reported that one parent told him that her child's father received a recorded phone call from the school about the grenade threat.
"It's elementary school, but they need metal detectors in there," Stephanie Feldman, a parent, said.
West Liberty students and staff were sent to Pittsburgh South Brook, according to Pittsburgh Public Schools. Pittsburgh South Brook and Pittsburgh Pioneer were placed on lockdown until police provided the all clear.
Feldman described the situation inside.
"It's calm in there. They have it all under control. All the elementary school kids are in the gym," Feldman said.
Police said West Liberty was deemed safe just after 10:30 a.m. and returned to normal operation.
It has since been determined that the grenade was a family relic, police said.
