The Latest on an oil spill in southern Louisiana (all times local):

10:40 a.m.

The Coast Guard says a contractor is cleaning up about 11,500 gallons of oil that overflowed from a tank being filled in south Louisiana.

Lt. j.g. Lisa Siebert (SEE'-burt) says much of the oil ended on the ground rather than a nearby bayou. The Environmental Protection Agency took over the investigation and cleanup supervision.

Siebert says Bayou Teche remains closed. Investigators don't know how much oil got into the water.

She says PSC Industrial Outsourcing reported the spill about 8 p.m. Monday and is paying for the cleanup.

State police say a shelter-in-place advisory for nearby residents was lifted about 8 a.m. Tuesday.

Siebert says the spill apparently happened because an alarm failed to signal that the tank was too full as it was being filled Monday.

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1 a.m.

The U.S. Coast Guard says an unknown amount of crude oil has spilled into a bayou in southern Louisiana.

The Coast Guard said in a statement Monday night it received a report around 8 p.m. that a tank along the edge of Bayou Teche near Charenton was being filled with crude oil when the spill began.

The statement says the source of the spill has been secured and crews have deployed more than 200 yards of boom.

NOLA.com/The Times-Picayune reports some residents of nearby St. Mary Parish were advised to shelter in place.

The cause of the spill is under investigation. The Coast Guard says the spill was reported by PSC Industrial Outsourcing. The company couldn't immediately be reached by The Associated Press early Tuesday.

A stretch of the 135-mile-long waterway will be closed to commercial traffic during the cleanup.

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The original story was updated to correct that a tank along the water's edge, not a tanker, was being filled when the spill began.