The remains of more than 1,700 prisoners executed in 1996 by jailers at Tripoli's notorious Abu Salim prison have been found in a mass grave in the capital, a National Transitional Council spokesman said Sunday. "We found the place where all these martyrs were buried," said Khalid Sharif, spokesman of the the NTC's military council, adding it was proof of "criminal acts" by Moamer Kadhafi's regime.