Indian negotiators continued their discussions with the IAEA for the second on a safeguards agreement which the Atomic Energy Commission chief said was ‘complex’ and has to be worked out.The discussions at the international atomic watchdog proceeded even as the US ambassador to the agency expressed confidence that his country's civil nuclear cooperation agreement with India would be implemented.Anil Kakodkar, who initiated the process of discussions with the IAEA Director General ElBaradei on Wednesday about India-specific safeguards agreement as a follow up of the deal with the US, left for home leaving other negotiators to continue the job."The safeguards issues are a serious business involving complex issues. We have to work out all these," he said before his departure.Observing that Wednesday’s meeting set out a broad outline of the complex issues, he said, "we have to take up all the issues related to it." He however, declined to elaborate on it. The Indian representative on the IAEA's Board of Governors Sheelkant Sharma said the talks would continue on Saturday.Ravi B Grover, Director, Strategic Planning Group of Department of Atomic Energy (DAE) is among the other officials participating in the discussions with the IAEA team that includes Olli Heinonen, Deputy Director General, Department of Safeguards, and Vilmos Cserveney, Director, External Relations and Policy Coordination.India approached the IAEA after the Left parties cleared the move on the condition that the government should not initial it but bring it back to the Left-UPA Committee.