The oldest American living survivor of the Pearl Harbor attack died on Wednesday, media reports said.

He was identified as 105-year-old World War II veteran Warren “Red” Upton.

Upton was a “very humble, gentle, soft-spoken man,” who was “well-read and well-informed with current affairs,” Kathleen Farley, the California state chair of the Sons and Daughters of Pearl Harbor Survivors, told CNN.

“Warren never considered himself a hero,” Farley said.

Upton passed away at a hospital in Los Gatos, California, early Wednesday morning, after suffering a bout of pneumonia for several days, Farley said.

Barbara Upton, 57, told CNN she and her brother were at the hospital at the time of her father's death.

“He was a very good and humble man, and a little bit shy,” she told the news channel.

She said her mother and father always taught them 'good values'.

Farley said Upton was the last surviving crew member of the battleship USS Utah, one of the seven ships sunk during the attack on December 7, 1941.

He died just days after the 83rd anniversary of the Pearl Harbor attack was observed.

Born on October 17, 1919, in El Dorado, California, Upton served as a Navy radioman aboard the USS Utah, according to Farley and Upton’s daughter, reported CNN.

The attack on Pearl Harbor was a surprise military strike by the Imperial Japanese Navy Air Service on the American naval base at Pearl Harbor in Honolulu, Hawaii, the United States, just before 8:00 a.m. (local time) on Sunday, December 7, 1941.

At the time, the United States was a neutral country in World War II.

The attack on Hawaii and other U.S. territories led the United States to formally enter World War II on the side of the Allies the day following the attack, on December 8, 1941.