Left outfits SFI and DYFI called for a protest against the arrests of various TET aspirants who were agitating against the graft in the recruitment process. The retaliatory protest faced a police crackdown with the imposition of section 144.

Meanwhile, placards, slippers and newspaper pages carrying news of TET candidates' 84-hour-long sit-in demanding primary school teachers' jobs lay scattered at Karunamoyee area near here on Friday morning, hours after the police removed them from there.

The police dispersed protesters on the intervening night of Thursday and Friday, saying they are violating prohibitory orders under Section 144 of the CrPC imposed there.

The protestors, including women, were shouting slogans and giving bytes to the media on Thursday night, as the authorities were mobilising resources. A strong police contingent led by senior officers then took them in vehicles and dropped them at places in other parts of Calcutta, far away from the protest site.

Around 20 of the protestors, who sat on one flank of the road leading to the information technology hub Sector V area from October 17, were on fast from the next day and five of them were shifted to hospital after they fell ill on Thursday.

In the morning, however, some passersby were seen looking at the spot covered with torn newspapers, discarded slippers of the protestors, some placards that had slogans like Do or die' and plastic sheets on which they were sitting.

Police personnel present at the spot were seen asking people on foot and cars not to stop there and move on.

Three of the protestors - Achinta Samanta, Achinta Dhara and Arnab Ghosh - were detained by the police and were later released on PR bond, a Bidhannagar Police Commissionerate official said.

CPM students wing SFI held protests in Karunamoyee area on Friday morning in protest against last night's incident before five of them were detained, a police official said.

Criticising the police action, acclaimed film director Aparna Sen accused the Trinamul Congress government of flouting the democratic rights of the people.

"The Trinamool government is flouting the basic democratic rights of the hunger strikers; Section 144 issued against a non-violent protest. Why? I strongly condemn the undemocratic and unethical action of the West Bengal govt," she tweeted.

Sen also wondered why Section 144 was invoked in the area when the protestors did not resort to violence and were sitting peacefully.

Leader of Opposition, Suvendu Adhikari of the BJP, tweeted: "West Bengal's current situation is alarming. Police applying brute force on agitating candidates of TET 2014 at Salt Lake to forcefully end their legitimate sit-in demonstration near the state Primary Education board office."

He shared several videos of police personnel lifting protestors from the spot.

Countering the barrage of criticism, Trinamul Congress state spokesperson Kunal Ghosh said the police are not interfering in the sit-in as the TMC-run government does not believe in crushing democratic protests.

"However, so far as the Karunamoyee incident is concerned, the protestors violated prohibitory orders and sat on a road before the board office. Police had to lift them as the movement was disrupting normal life," he said.