Charleston Police on Saturday arrested a Williman Street man after a search warrant helped lead to the confiscation of drugs and cash.

Derell Craig Whitley, 24, of 140 Williman St., is charged with trafficking heroin, possession of marijuana with the intent to distribute and possession of marijuana with the intent to distribute within close proximity of a school. Whitley was being held in the Charleston County Detention Center.

As the result of an ongoing investigation, police confiscated 16.9 grams of heroin, 346 grams of marijuana and more than $1,300 at the site. The case was led by the department’s Special Investigations Unit.