Armed men stormed a prison early on Wednesday in the southern Philippines, killing a guard and freeing more than a 150 inmates, police said, Reuters reported.
The gunmen opened fire at guards at the North Cotabato District Jail in Kidapawan city around 1:00 a.m., prison warden Peter Bongat told a local radio station.
Of the jail's 1,511 inmates, 158 managed to escape and four were recaptured, he said.
"It's well planned. Escapees used blanket as their getaway...We have a manhunt operation," said Bongat.