WESTPORT — A 33-year-old Weston man faces several charges for using a credit card that he illegally acquired by using the personal information of a Westport resident cared for under a conservatorship, police said.

Carter King is charged with first-degree identity theft, second-degree larceny, third-degree identity theft, trafficking in personal identifying information and unlawful possession of a personal identifying device.

King was charged by Westport police with trying to possess and distribute illegal narcotics last December.

A complaint was filed with police last October by the conservator for a local resident who reported suspicious charges made to that person’s credit cards.

After an investigation, which included the execution of a search warrant, detectives identified King as a suspect, police said.

King reportedly used the victim’s personal identity information to obtain an American Express card, and subsequently “incurred a high balance,” according to the report.

Unable to pay off the credit-card charges, police said, Carter contacted American Express and disputed the charges, claiming they were fraudulent “even though he knew that was not true,” the report states.

The charges were forgiven by American Express, police said, based on King’s false claims.

A warrant for King’s arrest was issued, and he was taken into custody Feb. 24 by Westport police detectives.

He was released after posting a $100,000 bond and is scheduled to be arraigned on the charges March 10 at state Superior Court in Stamford.