A foster parent from northeast Louisiana was arrested for computer-aided solicitation of a minor for sexual purposes, said Caddo Sheriff Steve Prator. David Charles Williams Jr., 41, of Columbia, is the most recent arrest by the Northwest Louisiana Internet Crimes against Children’s Task Force. The Task Force is operated by the Louisiana Attorney General’s Office; Bossier City Marshal’s Office; Caddo, Bossier, Claiborne, and Webster parish sheriff’s offices; Bossier City and Shreveport police departments; Louisiana State Police; Department of Homeland Security – Immigration Customs Enforcement; U.S. Marshal’s Office; and the Bossier, Webster, and Caddo district attorney’s offices. Caddo Sheriff’s Detective Robert Greer had been investigating Williams for several months after Williams initiated on-line conversations with the detective, whom he believed to be a 15-year-old girl. During those conversations, Williams used sexually explicit language and talked about meeting Greer’s character for sex. He also sent sexually explicit pictures to Greer. Greer learned through his investigation that Williams was a foster parent and that four children, ages 5-2, had recently been placed in his home. Greer obtained a warrant for Williams’ arrest, and the children were immediately removed from the Williams’ home. Williams was arrested in Orange, Texas, and is expected to be returned to Caddo Parish to face charges of computer-aided solicitation and indecent behavior with a juvenile. His bond has been set at $60,000.