July 23, Yerevan's Central Police Station received a report that a group of thugs had attacked two citizens from Czechoslovakia on Aram Street. On July 25, a similar report was called into the police station regarding the mugging of two Dutch tourists and three Argentine citizens on Koghbatsi and V. Sargsyan Streets. On July 27, as a result a police and National Security Service investigation, 16 year-old Mkrtich Hovsepyan, 28 year-old Hayk Boudoyan and his younger brother, 16 year-old Viken, were arrested. All confessed that they had attacked and robbed the foreign tourists. On the same day, a police search of Mkrtich Hovsepyan's house turned up a "Makarov" pistol. In the house of Boudoyan's, the police found Visa and Master Cards belonging to the tourists, a passport, watches, wallets, cell phones and various foreign currencies. The police state that there is a good possibility that the group has committed similar crimes in the past and has urged other victims of such muggings to inform the Central Police Station.