Four deaths in traffic collisions along Kaukonahua Road during a 47-day period from Feb. 21 through last night and another motorist killed April 6 on nearby Wilikina Drive account for 26 percent of O‘ahu’s 19 traffic fatalities this year.

“It’s definitely a danger zone,” said Maj. William Gulledge, commander of the Honolulu Police Department’s Wahiawa patrol district, of the narrow, winding stretch between Wahiawa and Waialua.

Gulledge has stepped up speeding and drunken driving enforcement in the area, but safety precautions make it difficult to post officers along Kaukonahua Road. “The road is narrow, so we can’t pull anyone over,” Gulledge said.

The motorist killed last night was identified today as Derrick Smith, 39.

Homeless man charged in attack

Police have charged a 40-year-old homeless man accused of stabbing his ex-girlfriend yesterday and fleeing police by running into the ocean.

Allan Yeager was charged with second-degree assault, first-degree terroristic threatening and abuse of a household member. His bail was set at $50,000.

Police said he confronted his 39-year-old ex-girlfriend at Lualualei Beach Park yesterday morning. He pushed her into her truck and jumped on top of her, stabbed her in the right temple area and punched her in the face, police said. He fled into the ocean, but was apprehended.

Arrest made in Chinatown, Kailua church bombings

Police have arrested a 33-year-old Kailua man in connection with two bombings in Chinatown and Kailua last month.

He was arrested on suspicion of second-degree criminal property damage and prohibited explosive device offenses.

An investigation into three improvised bombs showed they all appeared to be made by the same person, police said. Witnesses implicated the man. No one was hurt in the bombings.

On March 19 a bomb exploded in the stairwell of the parking garage at Harbor Village Apartments on River Street in Honolulu.

On March 26 a bomb exploded outside a classroom at the Kailua Church of Christ and damaged parts of the building.

Police also are investigating an explosion that damaged a toilet today at the Kapolei Recreation Center, 91-1049 Kamaaha Ave., shortly before 12:27 a.m., when an anonymous caller reported hearing a loud noise.