PHILADELPHIA (AP) — The criminal history of a man suspected of barricading himself inside a Philadelphia rowhome should have prevented him from legally owning the firepower he used Wednesday to wound six police officers in a standoff that carried deep into the night, authorities said.

Maurice Hill, who authorities say had at least a semi-automatic rifle and a handgun when he opened fire on officers serving a drug warrant, has on his record multiple arrests in Philadelphia and adjacent Delaware County between 2001 and 2012, according to online records.

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