Authorities in Centre County were searching for former Penn State football player Lavon Chisley within a week after Penn State senior Langston Carraway's murder, Centre County District Attorney Michael Madeira said.

An arrest warrant in Centre County for Chisley was filed June 22 for possession of a small amount of marijuana -- just 3 weeks after Carraway's death.

Madeira said police began looking to question Chisley about a week after June 5, the day Carraway was found stabbed to death in his apartment, 110 Northbrook Ln. Apt. 201. Madeira said he wants to interview Chisley because he was identified as a good friend of Carraway's.

While Madeira said there is no clear connection linking Chisley to the murder scene, Chisley has been identified as a person of interest in the case.

Patton Township Police went to the Martin Street home of Chisley's ex-girlfriend June 19 to ask her about Chisley's whereabouts, according to a criminal complaint.

His ex-girlfriend told police Chisley had moved out, leaving behind numerous items, including a postage scale with a small amount of marijuana on it, according to the criminal complaint. Chisley is now facing drug-related charges in Centre County based on that evidence, and a detainer has been placed on him.

The detainer prevents his release from the Ann Arundel, Md. detention facility, where he is also being held on marijuana charges in lieu of $2,700 bail after being arrested July 14 in Maryland.

Madeira said the detainer is in no way related to the homicide investigation.

Madeira said no one from the District Attorney's office or Patton Township police has spoken to Chisley's attorney, Karen Muir.

Repeated attempts to contact Muir for comment were unsuccessful.

The possibility that Chisley once lived with Carraway's parents partially led investigators to name him as a person of interest in the case, Madeira said.

Madeira has said Chisley came under the radar after police realized he left Pennsylvania after Carraway's death and did not contact the family or attend the funeral.

"To us, it seems odd," he said Wednesday.

Madeira said part of the DNA evidence recovered from the murder scene was returned, but he would not comment Wednesday on what evidence he received or whether it contains any new information. He also would not say what evidence police are still waiting for.

Madeira has said certain things found at the crime scene have led investigators to believe drugs and robbery could have been a motive for the murder.

A preliminary hearing for Chisley's charges in Ann Arundel has not yet been scheduled, but once Chisley clears up his legal problems in Maryland, Madeira said he would be extradited to Centre County to face the drug charges.

"It is our intention to bring him back," Madeira said.