New Castle police say an 18-year-old man was arrested Thursday in connection with the rapes of two teenagers that occurred in December. Authorities say Gary Brewton was arrested based on evidence located at the crime scene. Detectives say a masked man jumped the two girls, ages 17 and 18, as they were walking in the area of Logan Street and Boyles Avenue in New Castle on Dec. 17. The girls said at first they thought they were being robbed, telling police that the man threw them to the ground and demanded all of their money. They said at that point, he pulled out a huge knife and held it to the necks of the girls. Police say he then sexually assaulted both teenagers before fleeing the area. Brewton is facing numerous charges, including four counts of rape, two counts of sexual assault and six counts of robbery.