The shooter indiscriminately targeted vehicles and nearby buildings from his apartment window

A gunman opened fire on a busy shopping street in Sydney from his apartment window on Sunday, injuring 17 people, according to local police.

Acting Superintendent Stephen Parry said the suspect fired between 50 and 100 rounds using a high-caliber rifle, striking both people and vehicles.

Two hours later, police entered the building, arrested the 60-year-old suspect, and took his weapon. Police do not yet know his motive, Parry said.

A man in his 50s was hospitalized with gunshot wounds to his neck and chest, while 16 others were treated at the scene for injuries caused by shattered glass.

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“It’s unprecedented for Sydney to experience something like this, with such a large number of shots fired,” New South Wales Acting Assistant Commissioner Trent King told ABC Radio on Monday.

“We’re very fortunate that we didn’t have more damage, more injuries, or indeed fatalities,” he added.