Complex sentence: No one was injured in the attacks involving the mortar bombs which were described by police as'home made' devices, but flights were disrupted and Terminal One was closed as bomb disposal experts searched for any remaining devices after each attack.
Split into simpler sentences: No one was injured in the attacks involving the mortar bombs which were described by police as'home made' devices. However, flights were disrupted and Terminal One was closed as bomb disposal experts searched for any remaining devices after each attack.