NEW ORLEANS — (AP) - Federal officials probing reports of small amounts of oil popping up on the Gulf of Mexico near where a BP well blew out last year say they've found no oil leaking from seafloor wells.

This week the Coast Guard and BP sent deep-sea robots down to the disaster site and no leaks were found at the well or at two other wells drilled during the months-long work to get the out-of-control well capped.

They say no sheens were seen either.

Ed Overton, a Louisiana State University chemist leading efforts to analyze the BP spill, says samples from sheens found earlier in the week near the site of the disaster matched the fingerprint of the crude that spewed from BP's well.

The source of the new oil remains unclear.