Chennai, Aug 31 - Tamil Nadu Deputy Chief Minister M.K.Stalin left for London Monday and is expected to return Sept 9.

While there was no official reason given for the trip, it is said Stalin has gone to London for a health check-up, but no details were mentioned.

Stalin was to visit the US along with state government officials to discuss modalities of cleaning the Cooum river flowing through Chennai. He was to go to London from there.

However, the trip was cancelled as the assembly by-polls for five constituencies were held in the state and he was in charge of the ruling DMK's campaign.

Stalin's wife and four others are accompanying him.