The Penn State Police are investigating two similar incidents of indecent exposure that occurred on campus within the span of one week.

The first occurred on March 21 on the second-floor landing of McElwain Hall's main stairwell between 8 and 8:15 p.m. The newest incident occurred yesterday between 6:15 and 6:30 p.m in the stacks of the Pattee Library, police said.

In McElwain hall, police said a man entered the buillding behind the victim and followed her to the stairwell landing where he began to masturbate. In Pattee Library, police said the man sat behind the victim, attempted to start a conversation and began masturbating.

The man is described as being black, in his early to mid-20s, with a medium build and about 6 feet '2 inches tall. In both incidents, the man was wearing a medium gray sweatshirt. Anyone with information regarding these incidents is asked to contact Penn State Police at 814-863-1111.