Hanover Police dropped charges this week against David Puritz '96, who was arrested in April for possession of the drug LSD.
Puritz still faces misdemeanor charges of marijuana possession.
Marijuana and LSD were seized from Puritz's room in Bones Gate fraternity during a police search after a false fire alarm.
The LSD was found on "two one-half-inch foil-wrapped cubes," according to a Hanover Police press release.
Gene Park '98, another member of Bones Gate, has been arrested as the owner of the LSD, Police Detective-Sergeant Frank Moran said.
Puritz's "position was that the LSD was not his," Moran said. "We conducted a further investigation based on the information."
"We learned and identified whom we think the owner of the drugs is," Moran said.
"After the arrest of David Puritz the Hanover Police received information that indicated that the [LSD] in question belonged to another Dartmouth student named Gene Y. Park," according to a press release.
"With the cooperation of several individuals it was determined that the LSD was the property of Gene Park," it states.
"Due to this finding the felony charge against David Puritz for possession of LSD was withdrawn," it states.
Puritz said, "When it became obviously clear that I was a victim of circumstance, they dropped the charges."
Park was released on personal recognizance bail.
He is due to appear in Lebanon District Court July 10. Park was unavailable for comment.
Paul Manger, '97, Peter Navarro '98 and Josh Winterhalt '97 were also arrested for possession of marijuana Feb. 8.
