The original suit that Robert Downey Jr. wore in Marvel’s first Iron Man movie has been reported missing to the Los Angeles Police Department.

The suit was being kept at a prop storage facility in Pacoima, Calif., with owners discovering it was not where it should be on Tuesday.

LAPD says that the suit, which was made for the 2008 movie, could have gone missing at any point between February and April 25.

The suit is reportedly worth $320,000.

An LAPD spokesperson told Sky News that the alleged theft was “unusual,” and is being considered a high priority, though there are no leads so far.

It’s not thought that any other items are missing from the storage facility.

Iron Man, directed by Jon Favreau, was the first film in the Marvel Cinematic Universe, turning the adaptations of Marvel Comics material into a multi-billion dollar industry.

Downey has since appeared wearing various iterations of his robotic super-suit in nine other Marvel movies, notably the latest, Avengers: Infinity War.

The Iron Man character, the alter ego of billionaire businessman Tony Stark, first appeared in Marvel Comics in 1963.