Singapore agencies said on Tuesday they were making progress in cleaning up an oil leak and there had been no new sightings of oil at sea or onshore as of 3 p.m. (0700 GMT).

A land-based pipeline leak has led to about 30-40 metric tons of “slop” — a mixture of oil and water — being spilled into the sea off Singapore, Shell Plc said in a statement today.

Shell said on Tuesday that most of the oil leak from a land-based pipeline at Shell Energy and Chemicals Park Singapore on Bukom island had been cleaned up, with only small patches of light sheens around the island and Bukom Kechil remaining.

An oil leakage from a pipeline in Singapore operated by Shell (NYSE:SHEL) was reported early Sunday, according to local officials. They said a cleanup was under way. The leak was reported to have “stopped at source,

An oil pipeline belonging to British giant Shell began leaking into the sea on Sunday, Singaporean authorities said, adding that the spill was stopped and cleanup crews deployed.

Major energy company Shell and Singapore's Maritime and Port Authority deployed clean-up measures after a leak from a land-based pipeline, they said on Sunday.