Four people are missing and six others are wounded in Texas after a dredging vessel struck a natural gas pipeline, causing a fiery explosion.

The explosion happened at about 8 a.m. at the Port of Corpus Christi, located in the southern part of the state along the Gulf Coast. The U.S. Coast Guard said that the four people who are missing were working as part of the crew aboard the dredging vessel Waymon L Boyd.