Honolulu police arrested an Ewa Beach man whose handgun accidentally discharged and struck his neighbor’s house.

The man was cleaning his pistol inside his home when it went off at 8:48 a.m. The bullet pierced his bathroom wall and was discovered embedded within the neighbor’s exterior wall.

The responding officer saw that the handgun had a 14-round-capacity magazine, which is illegal, and arrested the man on suspicion of second-degree reckless endangering and owning a prohibited magazine, police said.