A Makakilo family has searched for a sixth straight day Sunday without success in locating their missing family member, a 74-year-old man with diabetes and dementia.

Milton Ishii was last seen leaving his Makakilo home about 8:30 a.m. Nov. 26 to go on a walk. After he failed to return, the family began searching long hours from Makakilo to Campbell Industrial Park in hopes of spotting him.

“It’s been exhausting,” Ishii’s son Shane Ishii said by phone Sunday. “We’re worried 24 hours a day.”

Ishii needs to take his diabetes pill, which he is supposed to take once a day, and doesn’t have his wallet with him. He has a hard time making decisions because of his dementia, his son said.

But Shane remained optimistic and hoped his father was finding food at least once a day.

Shane said his father likes to walk and often went out for strolls in the neighborhood. He usually stayed nearby, and his family would go out to get him if he didn’t return in about 15 minutes. The day he went missing, Ishii’s wife went to look for him after a few minutes, but couldn’t find him.

The family has been searching by driving through neighborhoods and walking along pathways. Police were notified and CrimeStoppers Honolulu issued a missing person bulletin for Ishii on Nov. 27.

Ishii is described as 5 feet 4 inches tall, 145 pounds, with white hair and brown eyes. He was last seen wearing a black shirt or jacket and blue jeans with a cap.

Shane said his father is physically strong, but moves slowly, and may have walked to the Campbell Industrial Park area where he used to work as a warehouse manager for Panasonic.

On Sunday, about a dozen family and friends searched in the Barbers Point, Kapolei, and Campbell Industrial Park areas. Shane said police told him it is possible his father may have been allowed onto a city bus that took him to another neighborhood.

Shane asked that anyone who sees his father call police at 911 or CrimeStoppers at 955-8300.