Amidst turmoil in Bangladesh, a high alert has been sounded in India's bordering areas with the neighbouring country where the situation has become extremely volatile following protests over a quota-related issue.

Bangladesh Prime Minister Sheikh Hasina has resigned and landed at the Hindon Air Base in Ghaziabad on Monday, hours after resigning as the country's Prime Minister and leaving Dhaka en route to Delhi.

BSF sources in Agartala said that all senior border guarding officials and commandants had rushed to the border, and had been maintaining tight vigilance along the frontiers.

"Our troops are on high alert along the border with Bangladesh. We have sealed the entire Tripura border with Bangladesh," the official said and added that all the battalions and companies of BSF deployed across Tripura border are deployed in the frontier.

He also said that in the backdrop of the chaos and unrest in Bangladesh, no untoward incident or infiltration bid so far has happened along the India-Bangladesh border areas and if any untoward situation arises in border, then guards are instructed to use non-lethal Pump Action Guns (PAG) and if necessary ‘shoot at sight’ order issued.

The top BSF official of Tripura frontier added that BSF is on high alert across the country's 4,096 km border with Bangladesh, with field commanders ordered to take "on ground" positions and be prepared for anything.

Five Indian states – West Bengal, Tripura, Meghalaya, Mizoram and Assam -- share a total of 4,096-km border with Bangladesh.

It may be recalled here that Indian Railways has stopped all trains to Bangladesh and Air India has cancelled its two daily flights to Dhaka.

Previously, during Bangladesh unrest, many political leaders of different political parties, including Awami League, took shelter in Tripura and West Bengal.

On Monday, a section of the crowd in Dhaka vandalised a statue of former Bangladesh President and the country's Independence leader Sheikh Mujibur Rahman, the father of Sheikh Hasina.

Earlier in an address to the nation, Bangladesh Army Chief General Waker-Uz-Zaman announced that Sheikh Hasina has resigned as the Prime Minister, and an interim government will be formed soon to run the country. The Army chief also said that he will be meeting President Mohammed Shahabuddin soon.

The developments followed after over 100 people were killed and more than 1,000 injured in the clashes that took place between police and protesters on Sunday. "With yesterday's count, the death toll in anti-government protests crossed 300 in just three weeks, making it the bloodiest period in the history of Bangladesh's civil movement," Bangladesh's leading daily 'The Daily Star' reported.

The student-led non-cooperation movement put immense pressure on the government led by Prime Minister Hasina over the past many weeks.

The students had been protesting against a 30 percent reservation in government jobs for relatives of freedom fighters who wrested independence for Bangladesh from Pakistan in a bloody civil war in 1971 in which, according to Dhaka officials, 3 million people were killed in the genocide by Pakistani troops and their supporters.

After the Bangladeshi Supreme Court slashed the reservations to 5 per cent, student leaders put the protests on hold but the demonstrations flared up because the students said the government ignored their call to release all their leaders, making the resignation of Hasina their primary demand.