A driver towing a float in a Carnival parade ran over his 16-year-old brother, killing him, state police said.

Clay Michael Sayer was standing between Kain N. Sayer's pickup truck and the float behind it, talking to riders on the float during a brief stop around 5 p.m. Saturday, Trooper Scott Moreau said. The teen was pinned by the float when the truck started moving again, Moreau said.

Kain Sayer, 21, was booked with vehicular homicide, drunken driving and careless driving, state police said.

A deputy at the Avoyelles Parish Jail said Sayer posted bail, but he did not know the amount. He also did not know whether Sayer had an attorney.

The accident occurred north of Marksville, a town of 5,800 about 75 miles northwest of Baton Rouge.