The British non-profit organization Presidium Network said that Paul Urey and Dylan Healy were arrested on Monday at a checkpoint south of the city of Zaporizhzhia in southeastern Ukraine. Urey, 45, of Manchester, was described by Mr Byrne as a “family man with children”. His mother, Linda, said the family was “extremely concerned” about Mr Urey, who is diabetic and needs insulin. Mr Healy, a chef from Huntington, Cambridge, was driving when the couple was arrested by the Russian military at a checkpoint, the Presidium Network reported. The Foreign Office said it was urgently seeking more information. Scott Sibley was killed in Ukraine. “The Foreign Office is doing everything it can to support and identify these two people,” Commerce Minister Anne-Marie Trevelian told Sky News. Dominik Byrne, co-founder of the Presidium Network, said the men were driving to try to evacuate “a lady and two children”. He said the two men were operating alone in the war zone and had not been linked to any aid group. Mr Bryan said their contacts had not been heard from since Monday morning and that the woman trying to help him leave Ukraine had received “strange text messages”. Her home was later raided by Russian forces who interrogated the family, putting her husband lying on the floor and demanding to know about their involvement with “British spies,” Byrne said. The family later fled to Poland, he said. The Presidium Network said the men were acting alone in the war zone and had not joined any aid groups. Linda Urey said in a statement: “My family and I were extremely concerned. We know that my son Paul and his friend who was a humanitarian volunteer in Ukraine were arrested by the Russians.” He was out there of his own free will. We want everyone to support us in bringing our son home and praying that he is safe. “My son Paul Urey is also Type 1 Diabetic and needs his insulin.” We asked the Presidium Network to help us and also the FCDO to help as well. We pray for him and hope he is safe. “ What you need to know – Listen to the latest episode It comes after a British military veteran was killed in Ukraine and another is missing while fighting Russian President Vladimir Putin’s forces. They were dedicated to Scott Sibley, the first British national known to have been killed in Ukraine. It seems that Mr. Sibley was fighting with the Ukrainian forces. “We can confirm that a British national was killed in Ukraine and that he is supporting his family,” the Foreign Office said on Thursday. “We know a British national who is missing in Ukraine and is supporting his family,” the ministry added. “We urgently request further information.” The FCDO has advised them not to travel to Ukraine and in March warned anyone who did could expect an inquiry upon their return. Service personnel are prohibited from heading to Ukraine to participate in the race. A 25-year-old Dane was reportedly killed in Mykolajiv on April 26 while fighting with the International Legion Ukraine, a unit for foreigners seeking to take part in the fight against Russia, according to Danish television network TV2. The man was not named.