MONACO (AP) — An explosion at an apartment building entrance in Monaco reportedly wounded a Ukrainian tycoon with ties to Russia and two other people, the chief prosecutor in the exclusive Mediterranean country said Tuesday. A search was underway for a suspect who fled on foot after the blast late Monday, Prosecutor Stéphane Thibault said, adding that the motive was unclear. Media reports identified Ukrainian construction tycoon Vadym Yermolaiev as being among the injured.