Those injured in the shooting also included an off-duty officer with the Bakersfield Police Department in Southern California, who was taken to a hospital for nonlife-threatening injuries, according to a news statement. Several of the department’s officers were off duty and attending the concert when the gunfire erupted.
The shooting came as security measures at many music venues have been boosted in recent years after concerts were targeted in terrorist attacks. In May in northern England, a bomb exploded at a concert by American singer Ariana Grande in Manchester, killing 22 people; in November 2015, Islamist attackers opened fire at a rock concert in Paris as part of coordinated attacks that left 130 dead. In both of those cases, the Islamic State claimed responsibility for the attacks.
In Manila in June, a 42-year-old Filipino gunman armed with a rifle and a bottle of gasoline burst into a casino and set a fire, killing 37 people. Police said the attack was motivated by gambling debts and other personal problems facing the gunman, who fatally shot himself. The Islamic State also claimed responsibility for that attack, but officials repeatedly denied it was terrorism-related.
Berman reported from Washington. Travis M. Andrews, Brian Murphy, Wesley Lowery, Devlin Barrett, Matt Zapotosky, Julie Tate and Aaron C. Davis in Washington; Barbara Liston in Orlando; and Dan Michalski in Las Vegas contributed to this report, which will be updated throughout the day.