A retired naval officer was in a critical condition in an Athens hospital last night after setting himself on fire following the murder of his wife, for which he is the main suspect, police said. Giorgos Lymberopoulos doused himself in white spirit and then set fire to himself near Klafthmonos Square in central Athens in the early hours of yesterday morning. Witnesses called an ambulance and the 64-year-old was rushed to the Laiko Hospital with serious burns. Officers had been looking for Lymberopoulos since Monday night when they found his wife’s body at the couple’s apartment in the Papagou district of Athens. Polyxeni Lymberopoulou, 56, died from multiple stab wounds. A knife and two rocks covered in blood were found next to her body, which was first discovered by the couple’s son. There were no signs to suggest that anyone broke into the apartment, police said, and the victim’s husband had disappeared. Lymberopoulos is thought to be suffering from mental problems.