"We have found layers and layers of skeletal remains. We now feel that further excavations will not be possible without the expertise of archaeologists," Judicial Medical Officer Dhananjaya Waidyaratne said.
"So we have put on hold further digging until we obtain the services of the Department of Archaeology. The court ordered that work to be suspended until January 3."
The suspected mass grave in the northeastern district of Mannar is the first one found after the end of the military campaign against the LTTE in 2009.
At least 10 skulls had been found at the site so far. Investigators believed that the remains are of people killed by the LTTE, Senior Superintendent of Police Ajith Rohana said.
"The LTTE had controlled this area for well over 15 years. So it must be the remains of the members of the security forces and civilians killed by the LTTE," Rohana said.
A similar mass grave was found outside the battle zone in the central district of Matale last year.
