Police arrested a 35-year-old man today for allegedly headbutting his 61-year-old mother in her Kailua home.

Officers responded to a reported domestic disturbance at a Kailua home.

Officers contacted the mother, who reported she and her son had been involved in a verbal argument at 3:50 a.m. today.

The argument escalated, and the son allegedly headbutted his mother, causing her pain, police said in a highlight of the assault.

Officers found the son at the house on North Kainalu Drive, and arrested him on suspicion of second-degree assault.

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