Four persons were killed after police fired on protesters who attacked a police station in the Bangladeshi city of Chittagong on Friday during a demonstration against a visit to the country by Prime Minister Narendra Modi.

Dozens were also hurt in the capital Dhaka where police used rubber bullets and teargas in clashes with violent protesters, witnesses said.

In Chittagong, thousands of supporters of an Islamist group streamed out of mosques after prayers to register their protest against his visit, police official Rafiqul Islam said.

“We had to fire teargas and rubber bullets to disperse them as they entered a police station and carried out extensive vandalism,” he told Reuters, referring to the protesters.

He made no mention of police using live rounds. Another police official, Mohammad Alauddin, said a Chittagong hospital had received eight persons with gunshot wounds.

He identified the dead as three students and a tailor.

After being received by Prime Minister Sheikh Hasina, Modi met Opposition and government leaders. Later, Modi and Hasina jointly inaugurated the Bangabandhu-Bapu Museum at the Bangabandhu International Conference Centre in Dhaka, PTI reported.

Hundreds of protesters clashed with police near a large mosque in Dhaka, witness Jahangir Alam said. He said dozens were hurt when police fired rubber bullets and teargas after protesters pelted them with stones and set ablaze motorcycles.

Social media network Facebook and its Messenger app, which are often used to organise protests, appeared to be down in some parts of Bangladesh.