Summary:
India's prime minister Narendra Modi has vowed to strengthen safety measures after a passenger train crashed in the southern state of Andhra Pradesh.

Full article:
New Delhi (CNN) -- At least 25 people are dead after a train crash in India early Tuesday morning, a spokesman for the ministry of railways said. The Hampi Express passenger train crashed into a stationary goods train in Penukonda, in the southern state of Andhra Pradesh, said the spokesman, Anil Kumar Saxena. The passenger train was en route from Hubli to Bangalore. The collision, which involved three coaches of the Hampi Express, also left 55 people injured. Saxena said he suspects the driver of the Hampi Express may have overlooked a red signal. He said an investigation has been ordered. Journalist Rakesh Nagar contributed to this report.