(CNN) -- An estimated 2,000 metric tons of crude oil may have spilled into the Singapore Strait when two ships collided off the city-state's southeastern coast on Tuesday, the Port Authority said.
The incident occurred about 6:10 a.m. Tuesday (6:10 p.m. Monday ET) when a Malaysian-registered tanker collided with a bulk carrier registered from Saint Vincent and the Grenadines, authorities said.
Both vessels were anchored after the incident and there were no reports of injuries.
Ships were sent to the area to clean up the oil spill, the Port Authority of Singapore said.
"We are very sorry for the incident," said Paul Lovell, a spokesman for AET Tanker Holdings, the company that owns the Malaysian registered vessel.
"It was an incident caused not by us hitting something, but by something hitting us. Not that that excuses it."
Lovell said officials at the scene were trying to determine how much oil had spilled, but they had already had success in using dispersants to contain it.