The Coast Guard is trying to find out what caused a collision between a cargo ship called Genius Star VII and a barge loaded with 840,000 gallons of No. 6 fuel in the Houston Ship Channel on Friday.

Watchstanders in the Texas City unit received a report concerning a collision Friday at 8:30 p.m. between the barge and the 394-foot cargo ship that contained grain.

While both vessels did report damage, no injuries or pollution were reported from either vessel.

Marine inspectors and marine casualty investigators were still sent out to do a preliminary investigation and mitigate any risk to the environment. They checked for any damage to the Genius Star VII and assess any risk to the mariners aboard the ship.

“Due to the quick response of our marine safety professionals here at Texas City, a major environmental incident was avoided,” said Lt. Cmdr. Zeita Merchant, executive officer of Marine Safety Unit Texas City. “We were able to direct the vessels to safe locations to assess the overall damage and ensure the safety of the maritime community.”

Investigators are still trying to determine the cause.