India's worst railway disaster in decades has killed at least 275 people. Here's what we know

India's authorities suspect a signalling fault is to blame for the three-train pile-up. (Reuters)

At least 275 people have been killed and nearly 1,200 more injured in a horrific three-train pile-up in the eastern Indian state of Odisha.

The high-speed Coromandel Express hit a stationary freight train, jumped the tracks and derailed the Yesvantpur-Howrah Express passenger train passing in the opposite direction just before 7pm on Friday near Bahanaga Bazar station.