Firefighters responded to a structure fire in Grant Hill on Thursday afternoon.

The blaze broke out at what appears to be party store that sells candy and piñatas on Imperial Avenue at around 4:50 p.m.

More than 70 personnel have been assigned to the incident, according to the San Diego Fire-Rescue Department.

Due to the fire, 29th Street was closed between Commercial Street and Imperial Avenue.

It’s unclear what started the fire or if there have been any injuries.

This is a developing story that will be updated as more information arrives.