Local news site Hawaii News Now reported that there has been at least one killed and three others wounded in the shooting, two of which are critically injured. Local authorities said as many as 100 eye-witnesses are being questioned to ascertain the vicissitudes of the crime, news agency IANS reported.
"Base security and Navy investigative services are now investigating".
The shooter's name has not been released, but he was an active-duty U.S. sailor assigned to the submarine USS Columbia, officials said in a statement on the Twitter page for Joint Base Pearl Harbor-Hickam.
Honolulu Emergency Medical Service spokeswoman Shayne Enright said they treated and transported patients but wouldn't provide more details. Two of the schools on lockdown are on the base, according to the Hawaii Department of Education.
Officials at the base confirmed that a sailor shot three people before turning the gun on themselves.
Bhadauria was in Hickam, which is at a distance from Pearl Harbour Naval Base, where the shooting occurred, the spokesman said.
Joint Base Pearl Harbor-Hickam said on Twitter that the three injured victims were all civilians working for the US Department of Defence, but gave no information on their condition.
It is the home port for 10 destroyers and 15 submarines.
This file photo shows a general view of Joint Base Pearl Harbor-Hickam on June 29, 2012 in Pearl Harbor, Hawaii. It is unclear whether the sailor knew the victims or if they were randomly targeted.
This, however, has not yet been confirmed by U.S. authorities.
He said the gunman has tentatively been identified as an active duty serviceman assigned to the USS Columbia. "I can say that we are mobilizing support services for naval shipyard personnel as well as everyone else who may be affected by this tragic event", Chadwick said.
Security forces attend to an unidentified male outside the the main gate at Joint Base Pearl Harbor-Hickam, Wednesday, Dec. 4, 2019, in Hawaii, following a shooting.
According to a witness who spoke to the news station, the shooter was wearing a uniform and appeared to be a sailor.
Pearl Harbour in Hawaii hosts a joint US Navy and Air Force base.