Relative of Princess Tatiana of Greece Reported Missing in California

Attilio Brillembourg, 53, was reported missing by police after last being spotted in Malibu on May 18

A man with family connections to Princess Tatiana of Greece is reported missing in California.

Attilio Brillembourg, 53, was reported missing after his last sighting in Malibu on Saturday, May 18, at 1:10 a.m., the Los Angeles County Sheriff’s Department stated in a missing persons report.

The New York resident “was last seen” on the 6000 block of Murphy Way in the Malibu area, according to the report.

Brillembourg shares the same name as his father, who is reportedly Princess Tatiana’s stepfather, per CNN and ABC 7.

He is described by police as 5’10” with gray hair and green eyes, weighing 165 lbs. with a “tattoo on his upper thigh.” He was noted to have last been seen wearing a blue shirt with gray pants and no shoes.

The LAPD said “there is concern for Mr. Brillembourg’s well-being” following his disappearance. They have urged anyone who knows his whereabouts to call the sheriff’s Missing Persons Unit at 323-890-5500 or send tips to lacrimestoppers.org.

PEOPLE has reached out to Princess Tatiana of Greece’s representative and the LAPD for comment.

This latest news comes a month after Princess Tatiana, 43, and Prince Nikolaos, 54, announced their divorce after 13 years of marriage.

The former royal couple said of their split in a statement on April 19: “Prince Nikolaos and Princess Tatiana, after fourteen years of living together, have decided to dissolve their marriage.”