Calcutta, Sept 14 :    Calcutta, Sept 14:  Trinamul Congress supporters went on the rampage on Beleghata Main Road, near the Sales Tax Building, on Thursday morning, hurling bombs and brickbats, smashing windscreens of passing vehicles and attacking police and mediapersons. At least half-a-dozen policemen and a number of pedestrians were injured and over a dozen vehicles damaged. Bombs were hurled at two senior journalists from Ananda Bazar Patrika, Hirak Bandyopadhyay and Anindya Jana, and one from Indian Express, Subrata Nag Choudhury, who were on their way to office in a car. A bomb exploded on the car's bonnet, shattering the windscreen. The driver was seriously injured with splinters in his hands, arms and stomach, while Nag Choudhury suffered a cut on his arm. 'We were stuck in the roadblock and found the police trying to disperse Trinamul supporters. The police waved us on and so we went ahead. Suddenly, a protester charged at us with a bamboo, smashing windscreens of some cars in front of us. When I shouted at him not to touch our car, he backed away. But then, there was a sudden blinding explosion. The next thing I saw was our driver, Raghu, bleeding profusely,' said Jana. Added Nag Choudhury: 'It was clear that the lumpens had taken over the streets, with the police mere bystanders.' In New Delhi, Trinamul leader and railway minister Mamata Banerjee was furious when she heard about the attack on mediapersons and asked party MP Sudip Bandopadhyay to inquire into the matter and instructed him to ask party supporters not to put up roadblocks as it 'inconveniences common people'. Bandopadhyay visited the ABP office on Thursday afternoon and said the party would take 'disciplinary action' against all those who involved in the incident. An FIR was filed by the ABP journalists with Entally police station. The police said a suo motu case had been initiated against the Trinamul cadre. Eight persons were arrested till the evening. At around 10 am, Trinamul supporters blocked Beleghata to protest the arrest of party activist Kalidas Bose. Trouble began around noon, when a large possé of police arrived to clear the streets. Trinamul men clashed with the police and attacked vehicles with iron rods and bamboos. The police finally resorted to a lathicharge to disperse the mob. The Press Club of Calcutta has condemned the 'heinous attack'.