June 4 (UPI) -- Police in San Jose, Calif., are investigating a deadly shooting that occurred near the rail yard where nine people were killed in an attack last week.
Officials said the shooting Thursday was located a block away from the Valley Transportation Authority, but the two incidents are not believed to be related.
Police said Thursday's shooting killed one person, a man.
"This is an isolated incident. It's, unfortunately, a very bad coincidence," San Jose Police Department spokesperson Christian Camarillo said, according to KGO-TV.
Meanwhile, authorities are still investigating the mass shooting last week at the VTA. The gunman, Samuel Cassidy, killed himself at the scene before police reached him. Officials released dramatic body camera footage earlier this week.
Santa Clara District Attorney Jeff Rosen said Thursday night that the attack might have been prevented if federal authorities had given local police information about Cassidy.
Homeland Security agents detained Cassidy in 2016 after a trip to the Philippines and later found books on terrorism and unspecified manifestos in his possession, as well as notes expressing hate toward the VTA, where he worked.
Rosen said the findings could have been enough to activate California's "red flag" law, which allows police to confiscate weapons and referred a potentially dangerous person for mental health services.