Sri Lanka's parliament has blocked a visiting UN human rights expert from meeting with judges hearing war crimes cases, citing fears of foreign interference in the judicial system.
Clement Voule, an envoy of the United Nations Human Rights Council, travelled to the South Asian nation to discuss civil rights protections in Sri Lanka.
But opposition leader Mahinda Rajapakse told parliament on Tuesday that Voule's plans to meet with senior judges overseeing cases concerning military excesses during the former strongman's tenure amounted to foreign interference.
On Wednesday parliament speaker Karu Jayasuriya said he had "intervened and stopped the meeting".
"I thank the opposition for bringing this to my notice, I have taken timely action," Jayasuriya added.
Sri Lanka faced international censure for its human rights record under Rajapakse, who was toppled in January 2015 elections.
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Forces under his command were accused of killing up to 40,000 Tamil civilians in the final months of the island's 37-year war against Tamil separatists that ended in May 2009.
Rajapakse's administration resisted global pressure to examine allegations of major human rights violations during his tenure. His successor President Maithripala Sirisena came to power on a pledge to investigate wartime atrocities, but has refused calls for an international probe.
UN expert Voule has so far met Chief Justice Jayantha Jayasuriya in the presence of foreign ministry officials. He is due to leave Sri Lanka on Friday.