Orlando Tercero charged with second-degree murder in Haley Anderson's death

Extradition proceedings are underway for Orlando Tercero, who has been charged with second-degree murder in the death of Binghamton University nursing student Haley Anderson.

Broome County District Attorney Steve Cornwell announced Saturday the results of a week-long investigation by a team of agencies at the local and federal levels, with the cooperation of authorities in Nicaragua.

Read more: How international law affects Orlando Tercero's extradition in Haley Anderson's murder

Tercero, a 22-year-old dual citizen also enrolled in BU's nursing program, fled to Nicaragua sometime before Anderson's body was found March 9, but was captured Tuesday.

Continuing Coverage:Haley Anderson friend: Tragedy a reminder of the impact you leave on others

An arrest warrant for the murder charge against Tercero was issued Friday by Binghamton City Court Judge Carol Cocchiola. It sets in motion legal procedures to bring Tercero back to the U.S. to face prosecution, Cornwell said at a news conference Saturday.

There was no firm timeline given for how long extradition could take.

"We will continue to work with all authorities to secure Mr. Tercero," Cornwell said. "It's up to diplomatic efforts, it's up to the Nicaraguan authorities, but it could be as soon as a plane ride to Texas or Florida. He will be back in the United States at some point."

Anderson died as a result of strangulation, Cornwell said, noting his office stands ready for trial.

Last week, prosecutors expected to present evidence to a grand jury for an indictment against Tercero. A conviction for second-degree murder could send him to prison for 25 years to life.

The investigation launched March 9, when Binghamton police were summoned to Tercero's residence on Oak Street in Binghamton.

Friends of Anderson found her unresponsive and called 911, Cornwell said.

More: Haley Anderson, slain Binghamton U. nursing student, remembered as 'a beacon of joy'

During Saturday's news conference, Binghamton Police Chief Joseph Zikuski said detectives have worked "around the clock."

A motive in the homicide has not been disclosed by police.

In a Binghamton police report from a September tire-slashing incident, Anderson told an officer she and Tercero "dated for a short time," but her friends have recently said the two were not a couple at the time of her death.

Read More: Police Report: Haley Anderson suspected Tercero slashed her tires, months before her death

Tercero's flight to Nicaragua before police named him a suspect quickly raised questions as to whether he would be returned to the U.S. for prosecution.

A significant development in the case came Tuesday, with the announcement by Nicaragua National Police that Tercero had been taken into custody at the Hospital de León where he received medical attention for self-inflicted injuries.

Over the past week, the case has drawn national media coverage and on Thursday, received a push from U.S. Sen. Charles Schumer, who urged the federal government to use "all available diplomatic influence" to ensure Tercero's extradition.

More: Schumer: Use 'all available diplomatic influence' to extradite Tercero from Nicaragua

"Orlando is being detained by Nicaraguan authorities for further investigation," Tercero's defense attorney Michael Bachner, from New York City, said Thursday. He's declined further comment.

Binghamton police and the DA's office have been assisted by the New York State University Police at Binghamton, the U.S. Marshals, FBI, U.S. Immigration and Customs Enforcement, New York/New Jersey H.I.D.T.A. Program Resources, the Port Authority Police Department of New York/New Jersey and the Nassau County Police Department.

Reporter Katie Sullivan contributed to this article.

On Twitter: @PSBABorrelli