Representatives of the British services arrived on Thursday in Bulgaria to work together with their Bulgarian colleagues under the investigation of the attempted poisoning of Bulgarian businessman Emilian Gebrev, this country’s Minister of Interior Mladen Marinov said. However, Minister Marinov did not specify how many and what type of British experts arrived in Bulgaria. Contacts with the services were made when Gebrev signaled about his poisoning. The Bulgarian border police would not know that Sergey Fedotov entered Bulgaria under his alias, Minister Marinov said.