Pittsburgh needs help to cover security costs during the G-20 economic summit that could range from $10 million to $20 million, Mayor Luke Ravenstahl said Monday.

Ravenstahl spent the day in Harrisburg meeting with Democratic legislators and Gov. Ed Rendell to lobby for legislation to create a payroll tax on city nonprofits and highlight the potential cost of paying overtime to the 4,000 police officers required to secure the Downtown summit Sept. 24-25.

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