At least 17 people were killed and many more injured in a stampede at India's Maha Kumbh festival, the world's largest religious gathering, a doctor at a government hospital said, as tens of thousands of pilgrims rushed to dip in sacred river waters during the Hindu event.

At least 30 people were killed and over 30 have been injured in a stampede at the Maha Kumbh Mela, one of the world's biggest gatherings that occurs every 12 years.

Israeli troops will remain in the Palestinians' Jenin refugee camp once the large-scale raid they launched last week is complete, Defence Minister Israel Katz said on Wednesday as a crackdown in the occupied West Bank extended into a second week.