Twenty-two people were arrested in an early morning drug sweep yesterday after a number of Pennsylvania State Police and State College Police Department investigations.

Police initially issued 22 warrants alleging heroin delivery, cocaine delivery, marijuana delivery and delivery of depressants; 19 of the individuals charged were arrested. The remaining arrests will occur later this week, State College police Sgt. John Gardner said.

Three additional individuals were arrested and charged with drug-related offenses as a result of the search warrants.

About 40 county police and probation officers participated in yesterday's raid, which was one of many annual drug sweeps, state police Cpl. John Bravis said.

"Our vice units are relatively small," Bravis said. "If we schedule it this way, we can get quite a few individuals at one time."

He added that a small amount of drugs was confiscated, and one potentially dangerous situation was dealt with during a raid at the residence of a Spring Mills man.

David Lego, 22, had a machete, a hatchet, several military-style knives, two shotguns, a handgun and a homemade explosive device in his home when police arrived, Bravis said, adding that a squad was called to deal with the explosive, and no one was hurt.

"That particular device was powerful enough to blow up a car," he said.

Most of the investigations, which began in May, involved drug purchases made by confidential informants or undercover officers. District Justices Jonathan Grine and Bradley Lunsford arraigned the defendants and scheduled their preliminary hearings for 1 p.m. Oct. 5 at Centre County Courthouse in Bellefonte.

Those facing heroin charges are:

Penn State student Alex Hoffman, 19, of Bellefonte, is charged with delivery and being held at Centre County Prison on a total of $32,000 bail.

Michael McCaully, 24, of Lock Haven, is charged with possession and was returned to Centre County Prison on an additional $40,000 bail.

Jesse O'Connell, 24, of Pennsylvania Furnace, is charged with delivery and was released in lieu of $20,000 bail.

Those facing cocaine charges are:

Frank Emricko, 29, of State College, is charged with delivery and was released on $25,000 bail.

David Lego is charged with delivery and was released in lieu of $25,000 bail. Additional charges of possessing dangerous weapons and explosives are pending, Bravis said.

Aaron Mills, 21, of Philipsburg, is charged with conspiracy to deliver.

Arraignment and bail information was unavailable at press time.

Gary Prisk, 52, of State College, is charged with delivery and was released on $25,000 bail.

Juliya Slashchev, 19, of State College, is charged with delivery and is being held at Centre County Prison on $35,000 bail.

Nicholas Whitehill, 22, of Bellefonte, is charged with conspiracy to deliver and possession. He was released on $25,000 bail.

Those facing marijuana charges are:

Penn State student Greg Asselta, 20, of State College, is charged with delivery and was released on $15,000 bail.

Penn State student Bruce Bratton, 23, of Boalsburg, is charged with delivery and was released on $15,000 bail.

Michael Clark, 20, of State College, is charged with delivery and was released on $20,000 bail.

Josh Schreffler, 20, of Bellefonte, is charged with possession. Arraignment and bail information was unavailable at press time.

Frank Stubb, 20, of State College, is charged with delivery and was released on $15,000 bail.

Penn State student Aron Teran, 22, of State College, is charged with delivery and was released on $15,000 bail.

Paul Yingling, 23, of State College, is charged with delivery and is being held at the Centre County Prison on $25,000 bail.

Those facing other drug-related offenses are:

Lindsey Allen, 25, of Clearfield, is charged with obtaining controlled substances by forgery. Arraignment and bail information was unavailable at press time.

Sherry Bumbarger, 48, of Lemont, is charged with delivering depressants and is being held at Centre County Prison on $25,000 bail.

Elvis Pressler, of Moshannon, is charged with delivering prescription narcotics and is being held at Centre County Prison on $25,000 bail.