Arizona State University police say a man who was allegedly trespassing on campus is also accused of exposing himself to a woman last month.
A female student called police on March 30 after a man flashed her at the psychology building.
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Joseph Mackinder was arrested by police outside the Sun Devil Fitness Center around 2 a.m. Friday morning for trespassing, police said.
No additional information was released about the suspect or the alleged crime.
Police said this is the third similar incident on campus this semester.