Reports: Private Investigator in Madeline McCann Case Is Dead

Photo of British girl Madeleine McCann, AKA Maddie is displayed on a TV screen at an apartment in Berlin, Germany, on Oct. 16, 2013 during the broadcast of German ZDF's 'Aktenzeichen XY' program. JOHANNES EISELE/AFP/Getty Images

Police are investigating the death of one of the first private detectives who was hired by the parents of missing girl Madeleine McCann.

Kevin Halligen, 56, was found dead at his girlfriend’s Surrey home after feeling unwell, Sky News reported.