"A united movement of mainstream political parties against the government begins on March 6 and there will be concrete unity soon," a buoyed up Hasina, also the leader of the opposition, told a group of injured Jubo League adherents at her party's Dhanmondi office.

The activists of Jubo League, youth front of the main opposition AL, suffered injuries in a police raid on the party headquarters on Bangabandhu Avenue on Monday evening.

Hasina said her party would write the international rights groups about the government persecution of political opponents and overall human rights violation in Bangladesh.

"Compile the incidents with supporting documents …. We'll send them to international rights groups to unmask the fascist character of the coalition," she said.

In a veiled reference to Prime Minister Khaleda Zia, she asked: "Is the government the head of which threatens to confine the opposition to their houses is democratic?"

She lauded the mainstream political parties for agreeing to simultaneous anti-government programmes and urged other like-minded parties to join hands.

In a first-ever display of opposition strength against the 28-month-old Khaleda administration the key opposition parties -- the Communist Party of Bangladesh, Workers Party of Bangladesh and Jatiya Samajtantrik Dal (Inu) -- will enforce a dawn-to-dusk national hartal on March 6.

At yesterday's programme, Hasina challenged her arch-rival Khaleda to prove her political strength in mid-term polls, saying, "If you have confidence, prove your acceptance in snap polls."

She said no BNP government could complete their tenures and the present administration was riding for a fall for what she said were its widespread misrule, misdeed and persecution of political rivals.

She also accused the government of carrying out a hate campaign against the AL leadership among the armed forces and police.

On deadly attack on Prominent writer Humayun Azad, Hasina said angered by his outspoken works the anti-liberation, communal and fundamentalist forces made the attempt on his life.

"Government high-ups are now scheming to save the real criminals by shifting the blame onto us," she alleged.

She accused the premier's family of empire-building through corruption and abuse of power.

"Creating an artificial shortfall in Bangladesh, the government is now going to import fuel worth TK 300 crore from India without any tender. The prime minister's family is involved in the corruption," she alleged.

AL Joint-Secretary General Obaidul Kader, Jubo League President Jahangir Kabir Nanok and General Secretary Mirza Azam, MP, were present.