The U.S. Federal Bureau of Investigation has announced a $10,000 reward for information relating to Norman Lee, an artist who worked for Marvel and DC Comics who went missing in the waters off East End in the Grand Cayman Islands on March 5, 2015.

At the time of his disappearance, Lee was on vacation his wife and a friend when they went snorkeling and became separated. After making it back to the shore, his wife sounded the alarm when she found no trace of her husband, and police began scouring the waters. According to the Cayman Compass, the search for Lee was called off a little under a week after he had gone missing, and police were then operating a “search and recovery” effort instead.

RELATED: FBI joins investigation into inker Norman Lee’s disappearance

According to a Royal Cayman Islands Police Service spokeswoman, the FBI had offered to help with the investigation, which is still open after nearly 20 months of Lee having gone missing. The FBI notice that was posted offered up the mention of the reward. “The FBI is offering a reward of up to $10,000 for information leading to the recovery of Norman Lee and/or the identification which leads to the conviction of those involved in his disappearance.”

The notice also mentioned that Lee had no known medical conditions and wasn’t in any poor health at the time of his disappearance. He was last seen wearing a white beach short, a clear snorkeling mask, and black and blue fins. At the time of his having gone missing, the Police Chief Inspector for the area, Brad Ebanks, stated that “The currents in that area are strong and it is unlikely that we will make any recovery at this stage.”

RELATED: Cayman Islands police end active search for comic book inker Norman Lee

Lee was a comic book artist (an inker, specifically) for nearly 20 years with both Marvel and DC, and his work spanned various projects, including titles for both “Avengers” and “X-Men." If you have any information on his disappearance, you can contact your local FBI office or the nearest American Embassy or Consulate.