UK police have launched an international manhunt for a father suspected of killing his wife and two daughters before fleeing to Zimbabwe.

The suspect, 45-year-old Ndodana Mkhanyisi Tshuma, also known as Mark, is a British citizen of Zimbabwean heritage. Investigators believe he left the United Kingdom through London Heathrow Airport on July 4 using a British passport.

The bodies of his wife, Zandile Tshuma, 42, and their daughters, Natalie, 15, and Nala, five, were discovered at the family’s £1.3 million home in an affluent area of Bedford, central England, after police responded to concerns raised on July 6.

Detective Lee Martin confirmed that authorities believe Tshuma has travelled to Zimbabwe and said efforts are underway to locate him.

“We know that Mark Tshuma left the country on Saturday and is now believed to be in Zimbabwe,” Martin told reporters.

The detective appealed directly to the suspect to surrender to authorities.

“We are actively working with national and international agencies to pursue every available line of inquiry to track you down,” he said, addressing Tshuma.

British police said they are collaborating with both national and international law enforcement agencies as the search continues.

According to media reports citing Companies House records, Tshuma operated a property business, Nexus Trove Holdings, from the family home.