Emergency crews responding to vessel collision near Port of New Orleans on Mississippi River

The incident occurred Friday on the Mississippi River.

NEW ORLEANS -- Emergency crews are responding to a collision involving a riverboat and a tanker on the Mississippi River near the Port of New Orleans, officials said Friday.

Approximately 129 passengers were on board the riverboat, American Heritage, at the time of the incident, according to the Port of New Orleans.

"We are in close coordination with the U.S. Coast Guard and local authorities. Guests and crew were evacuated, and we are deeply concerned for everyone involved," American Cruise Lines, the riverboat's operator, said in a statement. 

Louisiana Gov. Jeff Landry said he is heading to New Orleans.

"We are aware of the incident on the Mississippi and we are in close contact with local officials and law enforcement," he said on social media.

This is a developing story. Please check back for updates.