The last members of the IPKF , which was estimated to have had a strength of well over 100,000 at its peak , left the country in March 1990 upon the request of President Premadasa . Unstable peace initially held between the government and the LTTE , and peace talks progressed towards providing devolution for Tamils in the north and east of the country . A ceasefire held between LTTE and the government from June 1989 to June 1990 , but broke down as LTTE massacred 600 police officers in the Eastern Province
massacred 600 police officers
1990 massacre of Sri Lankan Police officers
Liberation Tigers of Tamil Eelam