State College Police released a statement Monday, saying psychedelic drugs, including drugs similar to LSD, or acid, were used and resulted in 20 year-old Conor MacMannis' death Saturday.
Police now want to know who supplied those drugs to MacMannis and others Saturday night.
A toxicology report is still pending to determine exactly what kind of drugs, if any, were involved in MacMannis' death, but police are moving forward as if this acid-like drug was in these students systems.
Police say six other students at the Penn Tower apartment complex were also under the influence of this acid-like drug Saturday.
Police say several of them were undressed, others were hallucinating, acting strangely, saying they believed someone was coming after them. These individuals allegedly became aggressive with police as well.
State College Police Chief Tom King, says officers did the right thing by calling ambulances to the scene to take these students to the hospital for medical attention.
King says it's important people in the public know LSD seems to be making a comeback in the State College and Penn State communities.
"We want friends and parents to pay attention and encourage their friends and partners to not do it, pay attention to what's happening in their loved ones lives. Be aware it's out there," King said.
Police are investigating to find who supplied these drugs to students and say they will be charged to the fullest extent.
Meanwhile, police continue to await toxicology reports, which could take between four and six weeks to come back. They will continue investigating MacMannis' death.
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