William Christopher Greene

William Christopher Greene (August 29, 2014)

A third person suspected of participating in a door-to-door solicitation scam in Howard County this summer has been arrested, police said Friday. 

William Christopher Greene, a 26-year-old man from Madison, Va., has been charged with extortion, conspiracy to commit theft scheme and conspiracy to obtain property from a vulnerable adult, according to police. 

Tabitha Nicole Sisk, 21, and Troy James Jenkins, 21, both of Virginia, were arrested in connection with the same scam in July. Sisk has been charged with extortion and Jenkins has been charged with fourth-degree burglary, extortion, theft scheme and obtaining property from a vulnerable adult. 

According to a police investigation, Greene, Sisk and Jenkins allegedly offered a Howard County resident yard and home improvement services for an unreasonably high fee, which the victim paid up front. The suspects didn't complete the work satisfactorily and returned several times to demand more money, police said. 

Sisk and Greene have been released on bond, while Jenkins remains in custody at the Howard County Detention Center on a $25,000 bond, according to police. 

Police warned that there are similar scams taking place in the county, and cautioned residents to be wary of unsolicited offers of work that require payment up front. 

Residents are asked to call police at 410-313-2200 if they believe they are victims of a scam or have observed a scam. The Howard County Office of Consumer Affairs also offers tips on how to avoid being scammed at consumer.howardcountymd.gov.