HONOLULU (KHON2) — The three men taken into custody in connection with a bomb scare on Tuesday night at Joint Base Pearl Harbor Hickam have been released.

Officials say that at around 10:30 p.m. a car tried to enter the Nimitz gate but was not authorized to do so.

When the guard tried to turn them around, he smelled drugs and spotted what appeared to be an explosive device in the car.

It turned out to be a 10-inch live mortar, which is similar to a rocket-propelled grenade. The mortar can be shot from a mortar tube, which officials did not find.

All gates were closed for about two hours. And the Nimitz gate was reopened shortly before 4 a.m.

Three of the civilians were taken in custody for questioning.

HONOLULU (KHON2) — Joint Pearl Harbor Hickam security forces reopened the Nimitz gate just before 4 a.m. Wednesday, after an overnight bomb scare.

At about 10:30 p.m. Tuesday night, officials say that a car tried to enter, but was turned around because it did not have authorized access.

That’s when the security guard noticed the smell of drugs and spotted what seemed to be an ordnance in the car.

An explosive ordnance team responded to the scene.

There were no injuries reported.

All gates were closed for about two hours, but was reopened shortly before midnight.

The Nimitz gate restricted cars coming onto base, until about 3:45 Wednesday morning.