(CNN) -- The mayor of New Jersey's capital city was arrested Monday on corruption charges after being accused of accepting bribes during an undercover operation, authorities said. The charges against Trenton Mayor Tony Mack, 46, his brother, Ralphiel Mack, 39, and business associate Joseph A. "JoJo" Giorgianni, 63, stem from an alleged kickback scheme to sell city-owned land to investors for significantly less than the assessed value. Mack and his brother, the head football coach at Trenton Central High School, both were released on $150,000 bail and slipped into a city vehicle after a court appearance. They were ordered to surrender their passports.
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NEW: The Trenton mayor's lawyer calls evidence presented against his client "weak"
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NEW: Tony Mack plans to remain in his job as mayor of New Jersey's capital, says his lawyer
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Mack, his brother and an associate are accused in a real estate kickback scheme
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The federal charges stem from a two-year FBI investigation
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