(CNN) - A grand jury will investigate last week's deadly building collapse in Philadelphia to determine whether anyone else will face criminal charges in the case, Philadelphia District Attorney Seth Williams said Monday.

Williams' announcement came after authorities charged crane operator Sean Benschop with involuntary manslaughter and other counts, accusing him of being too impaired to operate the crane allegedly involved in the incident.

Authorities say Benschop was working a crane to tear down a vacant building in downtown Philadelphia when a four-story wall collapsed onto a Salvation Army thrift store, killing six people and injuring 13 others.

Williams, who said he was to convene the grand jury Monday, added the panel would investigate "any and all aspects" of the collapse -- including city agencies and policies, "to determine if anyone in addition to Mr. Benschop should be held criminally responsible."

"I know Philadelphians demand action ... but our office will not be a part of a rush to judgment, so I ask and beg the patience of all Philadelphians as we work systematically, methodically and in accordance with the law ... to gather all the evidence."