Luis Alturet-Rivera is suspected of shooting and killing 29-year-old Diana Casado. Authorities say he shot her as she sat in her Jeep in a parking lot in Yonkers back in January 2017.

After the shooting, Alturet-Rivera reportedly fled to Connecticut, then to his native Puerto Rico.

In February, Yonkers cold case detectives tracked him down in Washington state. He was extradited to Westchester County and has been in custody since then.

Casado’s grief-stricken family members showed up at the arraignment wearing T-shirts with her photo on it.

Alturet-Rivera pleaded not guilty to all the charges in the indictment, including second-degree murder.

Alturet-Rivera is also reportedly a suspect in the 2018 murder of a woman he had been living with in Puerto Rico.

No charges have been brought in that case.

His attorney did not make an application for bail. He was remanded back to jail and is due back in court on Oct. 29.