The Indian army left Sri Lanka in March 1990, having had 1200 soldiers killed. Prabhakaran became ruler of the northern part of Sri Lanka. He attacked everyone he thought was responsible for the war. In May 1991, female suicide bombers killed the former Indian Prime Minister, Rajiv Gandhi, during an election rally. Prabhakaran did not trust other people. He would only drink his own bottled water, he slept with a gun under his pillow. He thought his cousin, Mahattaya, was plotting against him. He had him and many others tortured and killed.