Bayelsa Police Command spokesman, Mr. Asinim Butswat, stated this on Saturday in Yenagoa in an interview with the News Agency of Nigeria.
The police spokesman said two persons were still missing.
Butswat said search and rescue efforts had since been activated, but yet to yield any result.
“On Thursday, June 9, 2015, at about 4pm, a pipeline exploded while Agip staff were carrying out routine maintenance on Tebidaba-Clough line, in Southern Ijaw LGA.
“Twelve persons were burnt beyond recognition, which included a soldier on guard duty amongst others.
“Four persons were rescued alive and are undergoing treatment, while two persons are still missing. Search for the missing persons is ongoing,” Butswat said.
Officials of Nigerian Agip Oil Company, representatives of the host community and Bayelsa Ministry of Environment were investigating the cause of a recent oil spill in the area when the explosion occurred.