Sulphur is a city of about 21,000 residents in Calcasieu Parish, Louisiana. It is part of the Lake Charles metropolitan statistical area. At least one web-based reverse sting operation has occurred in the city. In September 2017, undercover officers in Sulphur arrested seven men for solicitation of prostitution. Sulphur Police Department detectives began investigating after receiving complaints of prostitution at local motels.  Using the website backpage.com, undercover officers identified individuals seeking to pay for sex and learned that some individuals wanted to exchange illegal drugs for prostitution. The officers met with these individuals, resulting in seven arrests. The identities of those arrested were publicly released.