India: At least 4 killed, 80 injured after train derails

At least four people were killed and 80 were left injured after an express train derailed in India's northeastern state of Bihar, according to authorities on Thursday.

"Four casualties have been confirmed and a rescue operation is underway. Twenty-one coaches have derailed," Tarun Prakash, general manager of the East Central Railway, told the Times of India.

The train departed from the Anand Vihar Terminal railway station in Delhi and was bound for the Kamakhya Junction in Assam.

The cause behind the derailment of the train was not immediately known.

Some of the injured people were sent to hospitals in Bihar's capital city, Patna, for treatment. 

Several passenger and goods trains have been diverted.

Railways minister Ashwini Vaishnaw expressed his condolences on X, formerly Twitter, and pledged to find the cause of the derailment.