A 60-year-old man was arrested Monday in Australia after police said he fired up to 100 bullets at passersby, injuring 20 people in the country's most populous city.

New South Wales police said they were called on Sunday evening to a street in Sydney's Inner West, where the alleged gunman was firing at random cars and police. One man with a gunshot wound transported himself to the hospital following the incident, police said. He is in a "serious" condition.

Another 19 people were treated for shrapnel or shattered glass injuries, with several taken to the hospital, authorities said.

Acting New South Wales Police Superintendent Stephen Parry said "anywhere between 50 and 100 shots" were fired between 7:45 p.m. and 9:30 p.m. local time on Sunday night in Croydon Park, a suburb of Inner Wes

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