At least 24 people were arrested by the security forces for defying the ban on celebrations, officials said.
The girls were killed when Sri Lankan jets bombed a children's home compound.
Sri Lanka on Tuesday shut down Menik Farm, one of the largest refugee camps in world which once housed 300,000 Tamils displaced during the country's decade-long ethnic war which ended in 2009.
The International Organisation for Migration has helped about 90,000 displaced Tamils, lodged in the Menik Farm camps in Vavuniya, to return to their towns and villages in northern Sri Lanka.
The political wing leader of the LTTE women's force, who crossed into the government-held areas from the no-fire zone in northern Sri Lanka in the guise of a civilian, was arrested from a refugee camp. Subramaniam Shivathai alias Thamilini, who came to the refugee camp with other civilians from Mullaitivu, during the last phase of the military operation was arrested at a welfare village in Vavuniya, a media report said.
The Liberation Tigers of Tamil Eelam has lost yet another strong bastion to the marauding Sri Lankan forces.
The Sea Tiger chief Soosai was reported missing after the Sri Lankan Air Force jets pounded his hideout killing at least 27 rebels, even as 5,000 civilians crossed over to the army held areas in Wanni, officials said on Saturday. It was immediately not confirmed whether Soosai was killed or wounded in the attack, but he was reportedly missing.
Liberation Tigers of Tamil Eelam supremo Velupillai Prabhakaran would never face the Sri Lankan security forces closing in on his last stronghold of Mullaitivu and would flee the country, a senior minister has said. "Our troops are on the verge of wiping out the LTTE and most of its leaders are now trying to either surrender or flee the country," Transport Minister Dallas Alahapperuma said.
Two Tigers were killed in a ground attack on Monday evening in the Vavuniya region where two soldiers were also wounded.
At least 10 Sri Lankan Naval officials went missing after a powerful mid-sea blast destroyed and sunk a fast attack craft they were sailing at Nayaru in the seas off Mullaitivu, sources said. "One of our Fast Attack Craft (FAC) has got caught in a suspected sea-mine explosion around 0230 hrs in the Nayaru seas. Ten sailors aboard are missing while another six have already been rescued," Navy Spokesman, Commander DKP Dassanayake said.
The jets destroyed two camps of the Liberation Tigers of Tamil Eelam in Mullaitivu district
The Tigers accused the military of 'insensitivity' in carrying out the attack on the day of Balasingham's funeral.
There was no immediate reaction from the LTTE in this regard.
In a conversation with R Ramasubramanian, Xavier said, "My documentary attempts to find answers to those frequently asked questions from Tamil refugees who are still in India."
Human rights abuses allegedly perpetrated in the war against Liberation Tigers of Tamil Eelam haunted Sri Lankan President Mahinda Rajapaksa on the sidelines of the CHOGM summit with UK Prime Minister David Cameron on Saturday giving the island country an ultimatum to conduct a credible probe into the war crimes by March, failing which he would seek an international investigation.