A female church worker was shot in the head and killed yesterday outside the main Catholic church in Bongao town, capital of the southwestern province of Tawi-Tawi. Police reports said Conchita "Ching" Francisco, a 62-year-old school principal, was shot in the head after attending evening Mass. Oblates of Mary Immaculate missionary Priest Jun Mercado said Francisco was about to take a ride on a motorcycle when assailants shot her. The gunmen remain unidentified. "She died instantly," Mercado wrote in a Facebook post. "Earlier, she led the rosary and was the commentator at Mass.” He added that he arrived at the parish convent at around 6 pm "only to be met by a murder." Aside from helping out in the parish church, Francisco also worked as principal at the Mindanao State University in the town. Police said they are looking into a motive for the killing. Related reports Militiamen 'behind Italian priest's killing'Call for probe into Dutch missioner's death