Bishop Edwin Dela Pena was sipping coffee after dinner in a southern Philippines coastal town last Tuesday when he received a phone call: it was from one of his diocese priests, who sounded panicky and distressed.

Father Teresito "Chito" Sugarno, the vicar general of Marawi City, had been taken hostage by Islamist militants along with about a dozen of his parishioners.

"He was only given a few lines to deliver, and it was simply echoing the demands of the kidnappers- for the troops to withdraw," said Dela Pena. If the demand was not met, he was told, "something bad would happen."