Police sirens. Credit / Shutterstock Authorities have confirmed that a tragic incident involving two University of Wisconsin–Platteville students is being investigated as a murder-suicide. The students, identified as 22-year-olds Hallie Helms and Kelsie Martin, were found with gunshot wounds in Wilgus Hall, a student residence on campus. According to officials, the shooting likely occurred around 4 p.m. on Monday, May 19. Helms, an elementary education major, was pronounced dead at the scene. Martin, who was studying psychology and served as…