1 dead, 5 wounded in shooting on Greyhound bus in California

Investigators are seen outside of a Greyhound bus after a passenger was killed on board on Monday, Feb. 3, 2020 in Lebec, Calif. A gunman killed one passenger and wounded multiple others on a Greyhound bus traveling from Los Angeles to the San Francisco Bay Area early Monday morning, the California Highway Patrol said. (AP Photo/Jayne Kamin-Oncea)

Investigators are seen outside of a Greyhound bus after a passenger was killed on board on Monday, Feb. 3, 2020 in Lebec, Calif. A gunman killed one passenger and wounded multiple others on a Greyhound bus traveling from Los Angeles to the San Francisco Bay Area early Monday morning, the California Highway Patrol said. (AP Photo/Jayne Kamin-Oncea)

Investigators are seen outside of a Greyhound bus after a passenger was killed on board on Monday, Feb. 3, 2020 in Lebec, Calif. A gunman killed one passenger and wounded multiple others on a Greyhound bus traveling from Los Angeles to the San Francisco Bay Area early Monday morning, the California Highway Patrol said. (AP Photo/Jayne Kamin-Oncea)

Investigators are seen outside of a Greyhound bus after a passenger was killed on board on Monday, Feb. 3, 2020 in Lebec, Calif. A gunman killed one passenger and wounded multiple others on a Greyhound bus traveling from Los Angeles to the San Francisco Bay Area early Monday morning, the California Highway Patrol said. (AP Photo/Jayne Kamin-Oncea)

Investigators are seen outside of a Greyhound bus after a passenger was killed on board on Monday, Feb. 3, 2020 in Lebec, Calif. A gunman killed one passenger and wounded multiple others on a Greyhound bus traveling from Los Angeles to the San Francisco Bay Area early Monday morning, the California Highway Patrol said. (AP Photo/Jayne Kamin-Oncea)

Investigators are seen outside of a Greyhound bus after a passenger was killed on board on Monday, Feb. 3, 2020 in Lebec, Calif. A gunman killed one passenger and wounded five others on a Greyhound bus traveling from Los Angeles to the San Francisco Bay Area early Monday morning, the California Highway Patrol said. (AP Photo/Jayne Kamin-Oncea)

LOS ANGELES — A man cursing and muttering incoherently opened fire aboard a packed Greyhound bus in Southern California early Monday, killing one passenger and wounding five others in a seemingly random attack, authorities and a witness said.