Prosecutors have accused a 42-year-old man of pushing a security officer through a 26th-floor protective glass pane of a University Avenue apartment building and attacking another resident.

Joseph R. Joyce, a transient from the East Coast with no permanent address in Hawai'i, was charged yesterday with attempted second-degree murder, burglary, assault and terroristic threatening stemming from an attack on two men, ages 63 and 77, at 500 University Ave. between 4:45 and 5 p.m. on Friday.

Joyce is being held in lieu of $500,000 bail pending his initial appearance today in District Court. If convicted, Joyce could get an additional 15 years in prison under enhanced-sentencing guidelines because of the ages of the victims.

According to an arrest affidavit compiled by police, the 63-year-old security officer went to the penthouse level to investigate a possible fight and saw a fire extinguisher and white powdery substance on the hallway floor when he left the elevator. He saw Joyce standing in another elevator.

The security officer told police Joyce ran at him and pushed him into a glass window pane that broke and shattered. Joyce continued to push him through the pane and lifted his legs off the ground, trying to push him out the window, the security officer told police.

In the document, the guard said the window frame and glass pane kept him from falling.

Police responding to a burglary-in-progress call at the building came to the guard's assistance.

The affidavit said one police officer, parked in the loading dock area at nearby 'Iolani School, said he saw half the man's body hanging out of the window.

In an earlier confrontation at the same location, Joyce allegedly used a fire extinguisher to break down the apartment gate of a 77-year-old male resident and discharged the extinguisher in the victim's face.

The man had come out of his unit to investigate loud noises and his dogs barking, and allegedly saw Joyce outside of the neighboring penthouse unit holding the fire extinguisher.

Joyce fled from the building. Police arrested him without incident in front of 513 Lauiki St. at 5:48 p.m.