A rescue mission was underway on Friday in eastern Indonesia as 20 hikers went missing following a volcanic eruption . Three of the missing people, including two foreigners, are reported to have died. What do we know? Mount Dukono, located on the Halmahera island in North Maluku province, erupted on Friday ​at 07:41 a.m. local time (10:41 pm UTC Thursday), spouting volcanic ash up to 10 ​kilometers (6.2 miles) high into the air, Indonesia's volcanology agency said. Twenty hikers, nine of them from Singapore, were reported missing shortly after. "There are three dead, two foreigners and one resident of Ternate" island in east Indonesia, Erlichson Pasaribu, the police chief of North Halmahera, told Kompas TV. Dozens of rescue personnel have been deployed to search for the trapped hikers, Iwan Ramdani, the head of the local rescue agency, ​told Reuters news agency.…