A 28-year-old man has been charged with sexually assaulting a 35-year-old woman and assaulting her friend when he tried to intervene, Honolulu police said.

Jasy Lucio, of Kalihi, was charged Tuesday with two counts of first-degree sexual assault and two counts of third-degree assault. He is being held in lieu of $100,000 bail.

The assault occurred on the lawn of the Agriculture Department building.

The woman told police she was sexually assaulted by an unknown man at about 2:30 a.m. Monday. Police said Lucio also assaulted the woman’s friend, a 61-year-old man, when the older man tried to help the victim.

The victim was transported to Kapiolani Medical Center for Women and Children to be examined.

Police arrested Lucio after spotting him hiding behind a large electrical box near a Makiki gas station on South Beretania Street.

He has a criminal record of criminal trespassing, a misdemeanor.