A young Loveland, Colo. couple have been arrested after a disturbing plot to lure a man and his 6-year-old daughter to a motel for sex, only to rob the man and kidnap the child to raise as their own.

According to ABC News in Denver, Sareena Morrison, 18, and Dustin Canup, 20, arranged to meet a man at the Hi-Way Motel in Loveland  on Friday, where police arrested the couple.

The couple told police that they had put messages on a sex website targeting men who were willing to bring their children to the hotel and have sex with Morrison.

The couple informed the police that they had no intention of having sex with anyone, they were planning on robbing the man and kidnapping the child to raise as their own.

Police were tipped off about the couple by a concerned citizen who saw an internet 'advertisement' describing a 15-year-old girl offering herself for sex -- the police were given a phone number that belonged to the 15-year-old girl.

On Thursday, Loveland police began an undercover investigation of Morrison. The Colorado Springs Police Department's Internet Crimes Against Children Task Force assisted on the case.

Police said during a series of conversations and text exchanges, Morrison agreed to meet a man -- in reality an undercover investigator -- and his 6-year-old daughter for sex at the Hi-Way Motel, located at 1027 E. Eisenhower Blvd.

They couple were being held in the Larimer County Jail on Monday night. Canup's bond is set at $100,000. Morrison's bond is set at $75,000.