Lindsay's Dad Called 'Menace' by Her Uncle
"He is a dangerous person. He's come at people before," Sullivan told reporters outside New York's Nassau County Courthouse Tuesday, according to New York's Daily News.
Inside the court, Lohan's case was assigned to another judge.
Lohan, 44, was arrested by U.S. marshals in New York last week after purportedly avoiding arrest for an alleged assault on Sullivan at a May 23 First Communion party in the Lohan family home in Merrick, Long Island.
Lohan was due to return to court Wednesday on separate charges of assault and harassment for allegedly beating up a city sanitation worker on Dec. 8, 2003.
Lohan has had several brushes with the law, the Daily News reports. In 1986 he reportedly served 90 days behind bars for allegedly swindling 27 people out of $135,000 in a securities sale.
Last year, his estranged wife, Dina, reportedly had him arrested for violating an order of protection.
The New York Post quotes Matt Sullivan's brother, Paul Sullivan, as saying of Lohan: "He's a con man." He also tells the paper that because of her father's behavior, "Lindsay has 24-hour armed security."