19 dead as troops fight ISIL-linked groups in Philippines

Latest group of civilians killed in Marawi City
adds to deaths of scores over past week,
including police and fighters.

Fighters locked in street-to-street battles with security
 forces in a southern Philippine city on Mindanao island
 have killed 19 civilians, the military said on Sunday, bringing the official death toll from nearly a week of fighting to at least 85.

The violence prompted President Rodrigo Duterte to 
declare martial law on Tuesday across the southern third
 of the Philippines to quell what he said was a fast-growing threat of "militants" linked to the Islamic State of Iraq and the Levant (ISIL, also known as ISIS) group.

Security forces are attempting to flush out rebels of
 the Maute and Abu Sayyaf armed groups, which have declared allegiance to ISIL.

Authorities said the fighters had killed 19 civilians in
 Marawi, a mostly Muslim-populated city of 200,000 people.

These included three women and a child who were found
dead near a university.

"These are civilians, women. These terrorists are anti-people.

We found their bodies while conducting rescue operations
 [on Saturday]," regional military spokesman Lieutenant Colonel Jo- ar Herrera told the AFP news agency.

An AFP photographer saw another eight bodies by a road in
the outskirts of Marawi on Sunday, with local residents
identifying them as employees of a rice mill and a medical
college.

Herrera said the military had yet to investigate the reported

deaths.

Thousands flee homes

The violence began when dozens of gunmen went on a
rampage throughout Marawi after security forces
 attempted to arrest Isnilon Hapilon, a veteran Filipino
 fighter regarded as the local leader of ISIL.

The gunmen planted black ISIL flags, took a priest and
 up to 14 other people hostage from a church, and set fire to
buildings.

Thirteen soldiers, two policemen and 51 fighters have
 died in the clashes, according to authorities.

Thousands of the city's residents have fled because of the
fighting, which has seen the military heavily bomb
 residential areas where the fighters were believed to be hiding.

The military announced on Saturday, the start of the holy
month of Ramadan, that it would intensify the bombing
campaign.

"In as much as we would like to avoid collateral damage,
these rebels are forcing the hand of government by hiding
and holding out inside private homes, government buildings
and other facilities," military spokesman Brigadier-General
Restituto Padilla said.

"Their refusal to surrender is holding the city captive.
 Hence, it is now increasingly becoming necessary to use more surgical airstrikes to clear the city and to bring this rebellion to a quicker end."

Duterte and military chiefs have said most of the
 fighters belong to the local Maute group, which they 
estimate has about 260 armed followers.

But Duterte has said local criminals are backing the Maute in

Marawi.