(CNN) -- A man arrested in July and accused of having a role in the kidnapping and killing of the three Israeli teenagers is "a senior member of Hamas," Mark Regev, spokesman for Israeli Prime Minister Benjamin Netanyahu, told CNN's Jake Tapper. Regev made the remarks Wednesday during a live interview on CNN's "New Day." "Apparently he was trying to illicitly cross the border into Jordan, but we got him in time," Regev said. "His arrest will lead, I hope, to further arrests." After the on-air interview, Regev was asked what proof Israel has that this man is a member...