NEW ORLEANS - The Louisiana Oil Spill Coordinator's office says a malfunctioning valve led to an oil spill in southeast Louisiana.

The Coast Guard says the leak happened in an abandoned pipeline near marshland along Lake Grand Ecaille. The area of coastal marshes and open water is about 60 miles southeast of New Orleans in Plaquemines Parish.

Hilcorp Energy of Houston owns the line. Spokesman Justin Furnace said in an email the leak was stopped and contained and cleanup has begun. The company estimates that anywhere from 1,260 gallons to 4,200 gallons leaked. The Coast Guard said the leak was reported Monday morning.