Former Jharkhand chief minister Babulal Marandi's son Anup was among 16 people killed in a late night Naxal attack at Chilkhadia village in Giridih district. ''Around 01:00 AM about 25 to 30 heavily armed naxalites reached the spot where the cultural programme was being held. They opened fire and exploded bombs killing 16 people,'' said Arun Singh, Additional Superintendent of Police (ASP).