KOLKATA: Tata Group chairman Ratan Tata has expressed anxiety in the wake of the call for an indefinite agitation by Trinamool Congress chief Mamata Banerjee from August 24 demanding return of 400 acres of land which, she alleged, was forcibly acquired from farmers for the Tata car project at Singur. West Bengal Industries Minister Nirupam Sen called on Mr. Tata here late in the evening on Thursday to discuss the developments. Mr. Sen told journalists that he tried to assure Mr. Tata that discussions were on with the Trinamool, which had said there would be no lawlessness during the agitation. Mr. Tata did not anticipate such an agitation and had thought that the project would be welcomed. The Minister said Mr. Tata was apprehensive of what would happen on August 24. Asked whether Mr. Tata was considering withdrawing from the project, Mr. Sen said he had made a lot of investments and it was not his intention to pull out, unless he was forced to do so.