Deputies are investigating after a man is robbed at gunpoint and forced to commit sexual acts on the suspect in Lehigh Acres. The unidentified victim told deputies he stopped at the 7-Eleven at Sunshine Boulevard and SR-82 for an energy drink. When he returned to his car and began driving again, a man popped up from his back seat and pointed a gun at him. The victim then drove the man to an ATM and gave him money. Afterward, the suspect demanded that the victim perform sexual acts on him. Fearing for his life, the victim complied. Lee County investigators are on the case.