In January 1997 heavy fighting around Paranthan and the Elephant Pass complex took the lives of 223 Army troops. On 27 September 1998 the LTTE launched Operation Unceasing Waves II and, after heavy fighting, captured Kilinochchi, winning the Battle of Kilinochchi. Clashes around the Kilinochchi forward defense line claimed the lives of 1206 soldiers that year. In March 1999, in Operation Rana Gosa, the government tried invading the Vanni from the south.The army made some gains, taking control of Oddusuddan (Oththan-thuduva) and Madhu, but could not dislodge the LTTE from the region. In September 1999 the LTTE massacred 50 Sinhalese civilians at Gonagala.