Lakhs of passengers were stuck as the Delhi Metro Rail and the railway services came to a sudden halt following power disruption in northern and eastern parts of the country on Tuesday afternoon.

Government sources said Delhi was one of the states that was worst affected by the second successive failure of the Northern Grid since Monday. Apart from Delhi, power supply was also disrupted in Punjab, Haryana, Uttar Pradesh, Jammu and Kashmir, Himachal Pradesh, Rajasthan and Uttarakhand.

Sources said that power supply of around 2 lakh megawatt had collapsed in the northern states.

Metro Rail officials said that some trains were stuck in tunnels, forcing them close all entry points to Metro stations. The Metro Rail officials used emergency services to rescue the passengers stranded in trains that were stuck in tunnels and took them to the nearest stations.

Power ministry sources said the Northern Grid failed again around 1 pm. Hundreds of trains were held up in different parts of north India. Several trains were stuck at Mughalsarai and Allahabad railway divisions.

The Indian Railway has issued an advisory asking the passengers to enquire about the status of their trains before leaving for the stations. At least 300 trains were stranded in eastern and northern parts of the country.

Power outage also affected road traffic, already affected due to water-logged roads, in Delhi as traffic signals stopped working in the city. Various other essential services were also hit by power failure.

Meanwhile, sources said that the Eastern Grid was also affected. As a result, there was no power supply in Bihar, West Bengal, Jharkhand and Odisha.

Train services were badly hit in these states, particularly the Howrah, Sealdah and Asansol divisions of Bengal following the Eastern Grid failure causing massive power cuts.

Union Power Minister Sushilkumar Shinde told Headlines Today that he has ordered a probe into the grid failures.

Around 2 pm, a Power Grid Corporation spokesperson said that all essential services would be restored in two hours.

Power supply was disrupted in northern states following the failure of Northern Grid around 2.30 am on Monday. The power supply was restored after nearly six hours.