Faced with strong resistance from Communist Party of India-Marxist supporters, Trinamool Congress chief Mamata Banerjee Thursday returned to Kolkata without entering villages in Nandigram where violent clashes left 14 dead after being briefly treated at a hospital here when she complained of chest pain.

Banerjee, who could not enter the troubled areas last night as her convoy ran into road blocks set up by CPI-M activists, reached Nandigram Sadar Hospital this morning to meet some of those injured in Wednesday's violence. But she complained of chest pain and had to be admitted to the hospital, where she was administered oxygen and saline.

Trinamool Congress leader Anuradha Putatunda alleged that Banerjee experienced the chest pain after she was hit by a stone hurled at her while she was on her way to Nandigram.

After Banerjee's condition stablised, Trinamool leaders decided to take her back to Kolkata. Putatunda alleged that Banerjee's convoy was repeatedly blocked and attacked by CPI-M supporters en route to Nandigram and at one place she was hit by a stone.

Banerjee had recently been discharged from a private nursing home where she was treated for nearly a month following a 25-day fast in December to protest the acquisition of 1,000 acres at Singur in Hoogly district for the Tata Motors' small car project.