Suspects caught in Gulf of Aden after failed hijacking , India says . The Indian Navy said the pirates were killed when their ship was attacked by a U.S. warship and its crew members rescued from the water. Piracy off Horn of Africa has sharply increased this year .
Suspects caught in Gulf of Aden after failed hijacking , India says . Boats , weapons , ammo , equipment also seized , officials say . Piracy off Horn of Africa has sharply increased this year .