KAILUA, KONA — As the second day of searching for Tomoko Ioh closed yesterday, officials still haven't found any sign of a 41-year-old mother of two whose vehicle was located unattended Sunday at Wawaloli beach park.

"We are still trying to determine what happened. The information we have is pretty vague," said Kailua fire Capt. Sean Sommers, who assisted in yesterday's ground search for Ioh in the Natural Energy Laboratory of Hawaii Authority area.
The search was expected to continue this morning.
Sommers said the department hasn't found any physical evidence suggesting the whereabouts or condition of Ioh other than her green and silver 1999 Suzuki Grand Vitara parked about 20 yards north of the beach park's restroom facility. The vehicle and items inside were intact.
The area also has been combed by police and fire personnel for possible tracks or drag marks suggesting a body has been moved, Sommers said.
Cadaver dogs searched the shoreline on Monday and "acted differently" in an area makai of the Kona Kampachi fish farm, said Dusty Frechette, a firefighter assisting in the search. However, no sign of Ioh was found in the area.
Officials are having difficulty conducting the search because a south swell has kept the department from sending divers into caves along the shoreline, said Sommers, noting the dangers of the rocky, treacherous coastline with strong northerly currents.
"Several people in the past have been washed off these rocks never to be found again," Sommers said. "However, a lot of times, if you have a victim drown near the shore they are found within a tight radius of where they entered the ocean because the currents and waves (will typically keep them in one area)."
On Monday, fire department personnel snorkeled in waters off the coast trying to find some sign of Ioh, Sommers said. Rescuers have made numerous sweeps of the coast in a rescue boat visually assessing caves and other shoreline formations for the woman, he said.
Personnel traversed the shoreline by foot as the fire department's helicopter made aerial observations of the shoreline and adjoining lava fields. The search area extends from the Pine Trees surf area north to Kekaha Kai State Park, offshore about a mile and, on land, over lava fields extending mauka toward Queen Kaahumanu Highway, Frechette said.
Ioh, who has two daughters — ages 1 and 8 — reportedly visited the shoreline area with her husband, Kai, prior to being reported missing, Sommers said. Fire personnel searched a tidal pool area where the couple occasionally came to watch the ocean, but found no sign of her.
Kai Ioh said his wife was a good swimmer who loved the ocean.
Tomoko Ioh told family members she would be back in 30 minutes to one hour before leaving her home around 10:30 a.m. Sunday, Kai Ioh said. Police began searching for her about 3 p.m. and located her vehicle at the beach park, according to police.
Officials had not determined what mental state Ioh might have been in prior to her disappearance, Sommers said. Police said she has a medical condition that may require medication.
Sommers declined to comment when asked if Ioh was known to take off for days at a time without notifying family or friends.
Ioh is described as about 5 feet 1 and about 110 pounds with black hair and brown eyes. Anyone with information or who may have seen her is asked to call the Kailua Fire Station at 327-3545, the police department's nonemergency line at 935-3311 or Crime Stoppers at 329-8181 in Kona or 961-8300 in Hilo. All Crime Stoppers information is kept confidential.