Police are seeking a 47-year-old caretaker of a construction business in Bangkok's Bang Khen district following the Tuesday night discovery of the body of his 38-year-old distant relative and colleague in an oil drum filled with mortar.

Police are looking for three suspects involved in Sunday’s attack on students and teachers at Bangkok’s Wat Sing Secondary School near a monk’s ordination ceremony, Bang Khun Thien superintendent Leusak Damnoensawat said on Wednesday.