Tony Scott, the director of exuberant action films like “Top Gun” and “Unstoppable,” and a prolific producer of television shows and commercials in partnership with his older brother, Ridley Scott, died on Sunday after jumping from the Vincent Thomas Bridge in the Los Angeles Harbor. He was 68 years old.

Officials here opened a suicide investigation, but did not expect to conclude it or to have results of an autopsy on Monday, Ed Winter, an assistant chief of the Los Angeles County Coroner’s office, said.

“We know that he jumped from the bridge, 200 feet in height,” Mr. Winter said in a telephone interview. “It was reported that several people witnessed him jump.”