their work. Lotz's terror letter bombs killed some Egyptian civilians and their effects were deemed limited. Arrest On 22 February 1965, Lotz was arrested at his home in Cairo. Lotz at first denied the charges of espionage, but broke down after the Egyptian police found a radio transmitter in his house while Lotz was confronted with evidence of coded radio messages transmitted from his house. In 1965 Syria had caught the Israeli arch-spy Eli Cohen while he used a wireless set, whose transmissions were traced back to his house in Damascus. Inspired by the Syrian example, the Egyptians had purchased new radio direction-finding equipment from the Soviet Union, which promptly picked up Lotz's transmissions. According to Lotz's 1972 autobiography, The Champagne Spy, Lotz was captured after a wireless set was discovered hidden inside a bathroom scale; he had used this to transmit Egyptian target coordinates prior to the impending Israeli surprise attack of 1967. The most recent account, reported that the Egyptians aided by Soviet experts in radio detection tracked Lotz down to his Cairo home and arrested him. Lotz, thinking he was exposed, confessed to being a spy but stuck to his German cover story and claimed he was tempted by the Israelis to spy for them in exchange for their giving him funds to establish his riding club. The Egyptians believed that Lotz was a German spying for Israel for financial reasons; had they known that Lotz was an Israeli citizen spying because he was a Zionist, he would had almost certainly been executed. However, Lotz was still tortured for information. According to some Israeli accounts, the Egyptians believed Lotz even when evidence arrived from Germany which pointed to his true identity. Lotz and his wife were put on trial and the Mossad managed to get him represented by a German lawyer and ensure a German observer from the embassy who oversaw the fairness of the trial. Lotz was sentenced to life imprisonment as a spy on 21 August 1965, and his wife was sentenced to three years in jail. Both were released in the prisoner exchange in 1968 following the 1967 Six-Day War. Later work and death He resided in Israel until the death of his German wife, Waltraud, in 1973, who died from coronary disease. He never returned to his Israeli wife and their son, Oded Gur-Arie. Lotz was called in 1980 to Munich by Egon