Witnesses say a burst of gunfire has rung out in the Philippine Senate where authorities have tried to arrest a senator who is wanted by the International Criminal Court for a charge of crime against humanity
One U.S. military service member and three defense contractors were killed.
The voting machine company executives allegedly paid $1 million in bribes.
More than 15,000 people have moved into emergency shelters since last week.
Cambodia, Laos, Malaysia, Singapore, and Vietnam have also been affected.
The convictions are the first major rebuke to police since Duterte's election.
