Authorities are investigating a "minor explosion" Sunday at a house in Northwest Akron.

Akron firefighters responded at 6:49 p.m. to 679 Cliffside Drive after neighbors reported hearing a loud boom. The front door had been blown into the home and there was damage to the front porch, Fire Department spokeswoman Lt. Sierjie Lash said Monday morning. Some windows also were broken.

There was no fire but there was smoke, Lash said.

Two people were inside the home at the time and they were assisted by neighbors. A woman inside the home needed medical attention but she wasn't injured by the actual explosion, with her medical emergency apparently brought on by the blast, Lash said.

Akron arson investigators, city police, Summit County Bomb Squad and federal Bureau of Alcohol, Tobacco, Firearms and Explosives are investigating.

Authorities spent the night at the scene and "collected a lot of evidence," Lash said. She said she wasn't sure if they had come to any conclusion about what caused the explosion.

Cliffside is a dead-end street with backyards that abut Sand Run Metro Park.