Abhisit and Suthep told a press conference that the charges against them were motivated by efforts to pressure them to allow Thaksin to be whitewashed by an amnesty bill.
The press conference was held after an official of the Department of Special Investigation, Pol Capt Piya Raksakul, came to the Democrat head office to hand over a summons for the Democrat leader and MP to meet DSI officials on Wednesday to acknowledge the charges.
The charges were issued following a recent court judgement that taxi driver Phan Kamkong was shot dead by military personnel during the operation against the protest in 2010.