Three bombs exploded in western Georgia, injuring a train engineer at a train station, officials said Thursday _ the latest in a series of blasts to hit the district that neighbors breakaway Abkhazia, AP reported. The engineer was slightly injured in the first explosion, which hit a train car just before midnight Tuesday at the station in Zugdidi, said Interior Ministry spokesman Shota Utiashvili. It was followed 30 minutes later by another that slightly damaged tracks nearby. A third bomb minutes later damaged a truck outside of Zugdidi, Utiashvili said. He said investigators believe all three explosions were connected and were designed to increase tensions in Zugdidi, which is close to the administrative border with separatist-held Abkhazia. He did not say who authorities think is responsible for setting the bombs. Earlier this month, a small stretch of railroad track outside of Zugdidi was destroyed by a bomb blast.