A Penn State student was stabbed in the chest in one of two separate incidents that each involved a weapon and resulted in an arrest this weekend.

Izaac Rodriguez, 23, of Las Cruces, N.M., was arrested after he allegedly stabbed the 21-year-old student in the chest at about 2 a.m. yesterday in the area of East Calder Way and Hiester Street, the State College Police Department said in a press release.

Rodriguez was charged with attempted homicide, aggravated assault, simple assault, reckless endangerment and disorderly conduct. He was arraigned before District Justice Allen Sinclair and placed in Centre County Prison in lieu of $100,000 bail. His preliminary hearing is scheduled for Dec. 3 at Centre County Courthouse in Bellefonte.

The victim was transported to Mount Nittany Medical Center and was later airlifted to Geisinger Medical Center in Danville. He suffered a single stab wound to his chest and was in critical but stable condition yesterday.

Officers searched the area and found Rodriguez in the McAllister Street parking deck. He was arrested without incident.

The officers were unable to recover the weapon, which was a small instrument that was either edged or pointed, police said.

Police did not say what events precipitated the assault.

Two other students accompanying the victim during the incident were allegedly punched and kicked by the suspect, but a weapon was not used against them. They suffered no serious injuries.

In a separate incident, Penn State student Marcus A. Carodiskey was arrested for allegedly pulling a gun on three other male students at about 9:30 p.m. Friday.

Carodiskey was charged with three counts each of simple assault, terroristic threats and reckless endangerment. He was arraigned before Sinclair and was released from Centre County Prison on $2,500 unsecured bail. His preliminary hearing is scheduled for 8:30 a.m. Wednesday at Centre County Courthouse in Bellefonte.

Police said the three men were standing on a third-floor balcony on the 700 block of East Beaver Avenue when the intoxicated suspect exited a building below them and began yelling about beer bottles being thrown from their balcony.

The men said they had not thrown any beer bottles, at which point Carodiskey allegedly pulled a handgun from his pocket and displayed it to them. The suspect inserted a magazine into the weapon and waved it in the air while yelling at the men, police said.

Court documents indicate that the suspect told the men, "I'll put a nine through your cranium."

Carodiskey and another man who had exited the building with him then left in a vehicle that was parked nearby, police said. One of the men on the balcony recorded his license plate number, which police used to identify the suspect.

Police said they spoke with Carodiskey at his apartment, where he admitted to engaging in a verbal argument with three men on a balcony and pulling out his gun at the time of the incident, according to the police documents.