The helicopter was leaving an oil platform when it crashed shortly after 6 p.m. Thursday. Coast Guard crews searched almost 180 square miles for eight hours, according to officials with the Coast Guard's 8th District Headquarters in New Orleans, local US media reported.
The Coast Guard said it received a call at about 8:40 a.m. from company officials at Rotorcraft Leasing, alerting the agency to the incident, UPI News reported.
An MH-60 Jayhawk helicopter and a Coast Guard 45-foot response boat were used in the search, officials said.
Earlier this month, the Coast Guard rescued three passengers from a downed helicopter about 35 miles south of Terrebonne Bay, La. That crash also involved a Rotorcraft Leasing helicopter that was attempting to land on an oil rig in the Gulf.
No details have been released on possible victims in Friday's incident, according to the US media outlets.
MNA/PR