There are fears of more violence in Indian-administered Kashmir, after a policeman drowned when an angry crowd pushed his car into a river on Sunday.

At least 23 people have died and many more injured in clashes over the death of a popular separatist rebel.

Burhan Wani, 22, died in a gunfight with the Indian army on Friday.

The violence that has erupted after his death is the worst seen for years in the restive region, claimed in its entirety by both India and Pakistan.

Kashmir has been a flashpoint for more than 60 years, sparking wars between the countries.

Within the disputed Muslim-majority territory, some militant groups have taken up arms to fight for independence or a merger with Pakistan.

In the latest incident, the culmination of a weekend of violence, a crowd in the Jhelum area pelted a police officer’s car with stones and pushed it into a river where he drowned while inside the vehicle.

The tensions have also led to the suspension of a popular Hindu religious pilgrimage to the Amarnath temple shrine, which has stranded some 15,000 devotees, Indian media reported.

The violence was sparked by the death of Wani, a commander of the region’s largest rebel group, Hizbul Mujahideen.

Thousands attended his funeral which was held in his hometown of Tral, about 40km (25 miles) south of Srinagar, on Saturday.

Police stations and military installations were attacked in violent clashes after the funeral, with several buildings burned down, police added.

The state government has said that it will also investigate reports of excessive police violence towards unarmed protesters.

Rights groups have described the current situation as a state of emergency. Hospitals remain filled with wounded protesters and phone and internet services are suspended.