INDIANAPOLIS — At least eight people were killed in a shooting at a FedEx facility in Indianapolis late Thursday, and the gunman was believed to have killed himself, the police said.

Officer Genae Cook of the Indianapolis Metropolitan Police Department told reporters Friday morning that multiple people with injuries, including one in critical condition, had been taken to hospitals in the area. She said employees at the facility were still being interviewed by detectives and may not have had the chance to contact their families.

Officer Cook said the police were working to identify the gunman and that no law enforcement officers had been injured.

“This is going to go long into the morning,” she added.

Earlier, Officer Cook had asked people who had been unable to reach family members who worked at the facility to gather at a nearby Holiday Inn Express, adding that representatives of the chaplain’s office of the police department would be there to assist them.

At about 2:45 a.m. on Friday, before the deaths were announced, the mood was anxious at the hotel as more than 100 people waited for news. Family members said FedEx employees are not allowed to use their phones on the floor of the facility and hoped that was why had not heard from their loved ones.

One of the people in the hotel lobby, Christina Valor, said she had learned about the shooting from news reports and driven to the hotel because she had not been able to reach one of her husband’s sisters who worked there.