A woman was beaten allegedly by her boyfriend, who tried to throw her off the balcony, while embroiled in an argument at their Waikiki apartment last night, police said.

The 25-year-old woman was taken to an area hospital and treated for her injuries. Police charged Bryan Adam Roudebush, 23, for investigation of attempted second degree murder following the 10:15 p.m. incident at their apartment at 2611 Ala Wai Blvd., police said.

The woman managed to escape and fend off the attack. She received help from a neighbor, police said.