The father of a US Navy sailor brutally killed during the 1985 TWA hijacking told The Post he has mixed feelings now that one of the suspected perpetrators has been arrested — because the collar “brings back a lot of memories.”

Navy Steelworker 2nd Class Robert Stethem, 23, was beaten unconscious and shot dead during the hijacking of TWA Flight 847 more than 34 years ago. His body was thrown onto the tarmac by three men with suspected ties to Hezbollah — one of whom was arrested Thursday on the Greek island of Mykonos.

“There’ll never be closure,” Stethem’s father, Richard Stethem, 84, told The Post on Sunday of the arrest. “If it’s him, it’s good. But there’ll never be a closure. It took our hearts away.”

The news tore open old wounds, he said.

“That’s the hardest thing right there. That lives with you. That lives with you every day. If it’s him, I hope they bring him back here,” Stethem continued.

While Robert Stethem was killed, the plane’s other 146 passengers were held hostage for up to 17 days.

Suspected terrorist Mohammad Saleh, 65, was taken into custody Thursday on Mykonos during a security check.

Richard Stethem said he and his family remain cautiously optimistic that Saleh is one of the men who killed his son.

“That’s all we can do is hope that they bring him back if it’s him. We’ve been hoping for a long time,” he said. “They said they’ll always go after them, they’ll never forget. And I believe them.”