A magnitude 7.8 earthquake has rocked the southern Philippines, leaving at least 12 people dead and injuring over 200
The powerful quake was recorded at 9:59 p.m. local time on Tuesday.
Duterte was detained as he returned to Manila on Tuesday, officials said.
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.