‘Dog Boy’ pleads guilty in mah-jongg extortion

The “Dog Boy” of Chinatown is no fan of gambling.

On Wednesday, Michael “Dog Boy” Tsan pleaded guilty in federal court to extortion charges after shaking down a mah-jongg parlor owner for protection money.

On March 19, Tsan went into the Chinatown business and “asked for the rent.” When the owner refused and attempted to dial 911, Tsan, 40, grabbed the phone and slapped her twice across the face, according to a complaint filed in federal court. Mah-jongg is an ancient Chinese game played with tiles.

In a rage, Tsan threw mah-jongg tables around the room, scattering tiles across the floor, and left the parlor. The owner called police and went outside. When she opened the gate, she found Tsan and his entourage waiting for her.

Tsan threatened her life just before officers arrived at 36 Spofford Alley, home of the Ghee Kung Tong, to find 10 men standing at the door. When police arrived, the men scattered, but cops later served a search warrant for Tsan’s home on Lydia Street.

Apparently, the woman had been paying $200 a month to Tsan in order to operate the parlor, but she refused to keep paying after a light was vandalized in front of the business, according to the complaint.

In an interview with San Francisco police, Tsan admitted to “messing up mah-jongg tiles at the parlor because he does not like to see people gambling,” according to the complaint.

Tsan has been in custody since the Police Department’s gang task force arrested him April 6. His sentencing is scheduled for Nov. 17 before U.S. District Court Judge Charles R. Breyer.

bbegin@sfexaminer.com

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