A suspect planning an attack on the mosque blew himself up in a nearby neighborhood when security forces surrounded a home where the man was hiding, according to the ministry.
The suspect refused to comply with demands to surrender, opened fire on security forces and then killed himself, officials said.
The explosion caused the partial collapse of the building in which the suspect was hiding. Six expatriates were injured and taken to a hospital, and five security personnel received minor injuries, a Saudi Press official in London told CNN.
