Police are asking for the public’s help to find a suspect in the murder of a 73-year-old woman at a Kunia farm Friday.

About 7:20 p.m. Friday, the woman was found unresponsive by a worker outside a farm shed on Kunia Road, police said.

The woman had stab wounds to her torso and was pronounced dead at the scene.

Police said the woman was last seen alive about noon Friday.

Honolulu police Capt. Walter Ozeki said the woman is believed to be an immigrant from Laos and a language barrier was hampering the investigation.

“At this point, we have no suspects in that case and we have no motive,” he said.

Police, who opened a second-degree murder investigation, recovered a knife at the scene that is believed to have been used in the slaying, he said.

Ozeki asked anyone with information to call police.

Man allegedly threatens store clerk

Police arrested a 67-year-old man Friday after he allegedly threatened a 35-year-old grocery store clerk with a dangerous instrument during a shoplifting incident in Kapahulu.

Police said that during the alleged theft at 4 p.m., the suspect threatened the clerk, then later returned to the store to harass the clerk.

Police arrested the man on suspicion of first-degree robbery.