A Pakistani police officer says authorities have killed four militants, arrested two and seized a large cache of weapons that were meant to be used in an upcoming attack.
Senior police officer Shahzad Sultan says a militant exploded a suicide vest during the raid on Monday on a house near the eastern city of Lahore, injuring nine officers.
Mr. Sultan says a search turned up six suicide vests, dozens of hand grenades, assault rifles and other weapons. The raid was carried out jointly with intelligence officials.
The police official said the militants were planning to target important buildings in Lahore during the current Ramadan holiday, which lasts almost three more weeks.
For years, Pakistani security forces have battled insurgency originating from tribal regions near the Afghan border.
