Shane Fuller, 31, fell from the back of a moving truck Saturday afternoon near Bay Street Park is in a coma, his grandfather said Monday.

The accident happened in the 1300 block of Bay Street about 2:30 p.m. when Fuller stood up in the truck’s bed as it was moving and was thrown out.  According to news reports, his head slammed into the pavement, causing blood to leak from his nose and a large gash on the back of his head.

Witnesses say Fuller was attempting to stop the intoxicated female driver behind the wheel from taking off in the moving truck.

Fuller remains in John Sealy Hospital in Galveston, where he was in critical condition and in a coma.

Police said the woman driving the truck was charged with misdemeanor driving while intoxicated, and she was driving with a suspended license.  She was released on bond during the weekend.