One contractor has been killed and another injured in an incident this week at the Petronas liquefied natural gas complex in Sarawak, East Malaysia.

Petronas subsidiary Malaysia LNG (MLNG) confirmed earlier this week that the incident occurred on Monday afternoon, local time, at the acid gas removal unit drain containment, which is currently undergoing maintenance.

MLNG claimed that both contractors were immediately sent to hospital where it was confirmed one of the contractors had died, while the second received medical treatment.

“MLNG is deeply saddened by the incident and we would like to extend our heartfelt condolences to the family of the deceased,” the company said Tuesday.

The cause of the incident is still under investigation, while MLNG noted that operations at the Petronas LNG complex remained unaffected by the incident.

The nine train Petronas LNG Complex is located in Bintulu and has a capacity of about 30 million tonnes per annum.