Both Maute and Abu Sayyaf have declared their allegiance to ISIL.
The BBC's Jonathan Head says there are several reports that the Maute brothers, who lead the Maute group, are among the dead, with intercepted communications from jihadist groups suggesting this.
Philippine military leaders have said their troops unexpectedly interrupted plans by the fighters to take over Marawi in a spectacular event to show that IS had arrived in the Philippines and was intent on carving out territory.
"The local terrorist groups are using the mosque; they are entrenched there".
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Wawrinka's lone worrying moment resulted when he nearly turned an ankle near the net in the last game against Cilic. Djokovic squandered two set points in the opening set.
However, he admitted that the fight in Marawi City is a huge challenge to the military.
Arevalo said fighting resumed on Saturday as troops pushed their advance into three districts where more than 200 militants were still holed up since the hostilities began on May 23.
They initially estimated there were about 100 gunmen but later said there were as many as 500, supplemented by foreign fighters from Chechnya, Saudi Arabia and Yemen.
In a press conference in Marawi on Friday, Lt. Col. Jo-Ar Herrera said the military had uncovered 63 specific accounts used by militants that focus on "spreading propaganda messaging and misinformation".
The military said on Friday its aim was to end the siege in Marawi City by Monday, the Philippines' independence day.
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Investigations into Russia's meddling in the 2016 election and possible collusion with Trump campaign aides are ongoing. Mark Warner, the top Democrat on the Senate intelligence committee, said on CNN's "State of the Union" on Sunday.
The assistance comes after months of strain between the two long-time allies that was stoked by Philippine President Rodrigo Duterte's hostility towards Washington and his pledges to throw United States troops out of the country.
"The presence of our USA counterparts facilitates exchanges of intelligence ... and also provides training exchanges and, of course, the technical support that we are sharing together in the fight against global terrorism", he added.
"The United States is a proud ally of the Philippines, and we will continue to work with the Philippines to address shared threats to the peace and security of our countries, including on counterterrorism issues".
"That's why we have community standards that explain what you can and cannot do on our service", a Facebook statement said. Their relationship provided Washington with a strategic foothold in Asia, and offered Manila a shield against China's assertiveness in the region.
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Jelena Ostapenko hit a double-fault on set point as Timea Bacsinszky leveled at 1-set apiece in the French Open semifinals. Pliskova would cut the deficit to 4-3 only to blaze a forehand long, leaving Halep to serve out the match after two hours.