Sri Lanka's Tamil Tiger rebels said Thursday peace talks due to be held in Switzerland next week have been postponed indefinitely, citing recent violence against Tamil civilians. According to a report published in the web-edition of India's leading English daily Thursday, the Tamil rebels in a statement after a meeting with Norwegian peace envoy Jon Hannsen-Bauer, said they would not attend the talks until normalcy returns.The Tamil rebels have again denied involvement in recent attacks on the military, which has been pushing the island towards restarting its two decade old civil war, the paper said.