Tamil Nadu Chief Minister KPalaniswami has favoured extension of lockdown to Prime Minister Narendra Modi by two weeks, based on expert committee recommendation, Chief Secretary, K Shanmugam said here on Saturday.The top state official said Palaniswami conveyed this to Modi in a video conference early today.Tamil Nadu will take a decision on lockdown extension based on Centre's move on the matter, which is expected to be revealed in Prime Minister Narendra Modi's address to the nation expected tonight at 8 pm."The Prime Minister's address to the nation has not yet been confirmed," he told reporters and added that it is expected at around 8 pm.