BRENTWOOD • Hours after lawyer Scott Rosenblum obtained an acquittal for a client accused of molesting a child while drunk, Rosenblum was accused of drunken driving in a traffic crash here.

Rosenblum, 56, of the 9600 block of Litzsinger Road in Ladue, was booked by Brentwood police on municipal charges of driving while intoxicated and careless and imprudent driving.

He insisted Tuesday that he had been tired from long work hours during the weeklong trial — not intoxicated.

Rosenblum was driving a 2013 Bentley south in the 1800 block of South McKnight Road when he apparently crossed the center line about 12:15 a.m. Tuesday and crashed head-on into a northbound 2001 Toyota Tundra pickup, said Brentwood police Maj. James McIntyre.

The driver of the Tundra, a man, 27, was hospitalized for what police said were minor injuries. Officials did not reveal his identity. They said he did not appear intoxicated and was not arrested.

McIntyre said he could not say whether Rosenblum, one of the area’s best-known lawyers, took a field sobriety test or breath test.