Valerie Reyes’ accused killer said he panicked after she fell and hit her head, so he put her in a suitcase and “ran” instead of calling the police.

The suitcase with Reyes’ body was found nearly a week later, on Feb. 5, beside Glenville Road in Greenwich. Her hands and feet were bound with twine and duct tape and her mouth was covered with tape, according to police reports.

Authorities have charged ex-boyfriend Javier Da Silva, 24, of Queens, N.Y., with a federal count of kidnapping resulting in death in the case.

In an interview with the New York Post from the Westchester County Jail, where he was held, Da Silva said he tried to revive Reyes after she fell in her New Rochelle apartment on Jan. 29.

“She wasn’t responding. I went and put my mouth on her mouth. I tried to put air in,” he told the newspaper.

“I don’t know what happened. I didn’t mean to do it,” he said. “I’m a bad person.”

In the interview Da Silva said he didn’t call police because he feared they would blame him.

He tied Reyes up because she wouldn’t fit in the suitcase, Da Silva told the Post, which described him as sobbing during the talk. The state medical examiner ruled Reyes’ death was a homicide but have not released a cause of death, pending further tests.

In an earlier account from court documents, Da Silva described driving the suitcase north until “after driving for some time (he) stated that he placed the suitcase in a forest” — presumably the wooded area by Glenville Road where it was found.

According to the criminal complaint, federal investigators found their way to Da Silva after he allegedly used Reyes’ debit card to withdraw $1,000 at a New Rochelle bank branch at 5 a.m. Jan. 29. A man in a black hoodie was seen making the withdrawal. It appeared he was driving a rented black Honda CRV. A license plate number was later obtained, leading police to Da Silva in Queens.

Da Silva told the New York newspaper that he made the withdrawal because he wanted police to find him.

“I’m sorry for the pain,” he said.