Story highlights Explosion reported Sunday night on oil platform

Cause of the explosion remains under investigation

(CNN) The search for a man missing after an oil platform on Lake Pontchartrain, Louisiana, exploded Sunday night has been suspended, according to the US Coast Guard.

The Jefferson Parish Sheriff's Office identified the missing person as 44-year-old Timothy Morrison of Katy, Texas.

"The decision to suspend a search is never an easy one," said Cmdr. Zac Ford. "We send our thoughts and prayers to the Morrison family and all those affected by this incident."

Seven other crew members on the platform were rescued and rushed to local hospitals. Four of them have been discharged, said Mike Guillot, director of East Jefferson Emergency Medical Services.

US Coast Guard Petty Officer Lexie Preston said the agency has launched a helicopter to assist in the search for the missing man.

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