A man who was on the run after a scuffle with a soldier at a U.S. Army base in Hawaii, prompting an hourslong lockdown and manhunt, has been arrested, the authorities said late Thursday.

Paul A. Smith, 27, was taken into police custody on the island of Molokai on Thursday evening, said Alana Pico, a spokeswoman for the Maui Police Department. The police did not say whether he was armed when the arrest took place.

Mr. Smith, who was apprehended at the Molokai Airport, was later identified as a soldier transitioning from active duty and not assigned to a unit in Hawaii, said Mike Donnelly, a spokesman for the U.S. Army Garrison Hawaii.

Earlier, Mr. Donnelly said that an armed man dressed in civilian clothing was confronted by a soldier at about 2:30 p.m. at the Schofield Barracks on the island of Oahu. The authorities later identified him as Mr. Smith and said they believed he was armed with a handgun.

After unconfirmed reports that shots had been fired on the base, a shelter-in-place order was issued, and schools enacted active-shooter lockdown procedures, the authorities said.

After an extensive search, the lockdown order was rescinded, the U.S. Army Garrison Hawaii said in a statement on Facebook at about 4:50 p.m., adding that the reports of shots had never been confirmed and that “there is no longer an assessed threat on the installation.”

The search for the man took law enforcement officials both on and off the base, and to another island. Hours later, the police arrested Mr. Smith “without incident” at about 8 p.m., Ms. Pico said.

The U.S. Army Garrison Hawaii described him as a 5-foot-10, light-skinned man in his 20s or 30s wearing a button-down aloha shirt and jeans with Nike sneakers. He had a mohawk-style haircut and was carrying a camouflage cross-body bag, it added. Before his arrest, he had last been seen near the base’s commissary at about 3:20 p.m., Mr. Donnelly said. The authorities also said that he was driving a white sedan.

Schofield Barracks was returning to normal operations on Thursday evening, the U.S. Army Garrison Hawaii said, adding that an investigation about the man was ongoing.