By Alecia Reid

CHESTER COUNTY, Pa. (CBS) — There are new developments in a deadly stabbing caught on camera inside a Lincoln University dorm. The sister of a student is now facing charges, including first-degree murder.

The Chester County district attorney believes the murder was premeditated, saying the defendant drove an hour and a half from Northwest Philadelphia with a knife, stabbing three people on campus and leaving one of them dead. 

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Jawine Evans, a popular senior who was known for his basketball skills, is now being mourned.  

“He was a senior about to graduate,” Isaiah Williams, a freshman, said. “He was almost out of here.”

Nydira Smith - Sister Of Lincoln University Student Charged With Killing Jawine Evans In Campus Stabbing

Nydira Smith

Williams’ alleged killer, Nydira Smith, is behind bars. Officials say last Wednesday, the 39-year-old called Lincoln University worried about her brother after his roommate possibly stole items from a group of students. By 9 p.m., she presented her ID at the front gate. 

Cellphone video shows Smith with a bright-colored hat, in the middle of a squabble. Soon after Evans stumbles away, visibly injured 

“She stabbed me,” one person said during the video. 

The artery in his neck was severed. 

“Every time I walk in there, I think about him,” Williams said. 

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Police were able to track Smith’s maroon Xfinity to her Mount Airy home and executed a search warrant. 

Officials say blood was found inside her vehicle and home.

“Detectives recovered a set of knives from the defendant’s home where one knife was missing,” Chester County DA Deb Ryan said. 

They also found paperwork from Chestnut Hill Hospital where she went for treatment for a laceration. 

Evans’s funeral will be held Friday at The Met in Philadelphia.  

In a family statement released by their lawyer, Evans’ mother says in part: “We thought he would be safe on the campus of Lincoln University, and we’re stunned at the lax university security.”

Lincoln’s campus police chief Marc R. Partee said Smith’s lethal visit to campus was a breach of trust.

“What we will do is a comprehensive review of the whole incident to see if there’s anything we can do in terms of best practices across the field,” Partee said.

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Smith is currently being held without bail. The two other students who were stabbed are expected to make a full recovery.