Human rights groups have filed lawsuits in Brazil and Colombia against Sri Lanka’s ambassador in Latin America, accusing him of war crimes.
Former general Jagath Jayasuriya was a commander in the final stages of the civil war with separatist Tamil rebels in 2009.
Tens of thousands of Tamils – and the rebel leadership – were killed at the end of the conflict, in which both sides were accused of atrocities.
Human rights groups have long called for prosecutions but there have been none so far.
What is Jagath Jayasuriya accused of?
Sri Lanka’s ambassador to Brazil, Colombia, Peru, Chile, Argentina and Suriname was in charge of troops in the north-east of the island who are alleged to have attacked hospitals and abducted, killed and tortured thousands of civilians.