A private company supplies drinking water at Tk 2 a litre to patients and relatives in some hospitals in Dhaka. A water purifier has been installed at the Dhaka Medical College Hospital. Photo: Asif Mahmud Ove

BNP supporters march towards a rally in front of their headquarters in Dhaka's Naya Paltan on Friday, which was organised to demand the release and treatment of their jailed chief Khaleda Zia. Photo: Asif Mahmud Ove

BNP Secretary General Mirza Fakhrul Islam addresses a rally in front of their Naya Paltan headquarters in Dhaka on Friday for the release and treatment of their jailed chief Khaleda Zia. Photo: Asif Mahmud Ove

The BNP holds a rally in front of the party’s central office at Nayapaltan in Dhaka on Friday, demanding Chairperson Khaleda Zia's release from jail and treatment. Photo: Mahmud Zaman Ovi

The BNP holds a rally in front of the party’s central office at Nayapaltan in Dhaka on Friday, demanding Chairperson Khaleda Zia's release from jail and treatment. Photo: Mahmud Zaman Ovi

The BNP holds a rally in front of the party’s central office at Nayapaltan in Dhaka on Friday, demanding Chairperson Khaleda Zia's release from jail and treatment. Photo: Asif Mahmud Ove

The BNP holds a rally in front of the party’s central office at Nayapaltan in Dhaka on Friday, demanding Chairperson Khaleda Zia's release from jail and treatment. Photo: Asif Mahmud Ove

Students and guardians collect information from a stall of the two-day Study in India Expo at the Bangabandhu International Conference Centre in Dhaka after the opening on Friday. Photo: Asif Mahmud Ove

Students and guardians collect information from a stall of the two-day Study in India Expo at the Bangabandhu International Conference Centre in Dhaka after the opening on Friday. Photo: Asif Mahmud Ove

A five-day National Fish Fair started at the Krishibid Institution premises in Dhaka on Friday as part of the National Fisheries Week 2018. Photo: Abdullah Al Momin

A five-day National Fish Fair started at the Krishibid Institution premises in Dhaka on Friday as part of the National Fisheries Week 2018. Photo: Abdullah Al Momin

A five-day National Fish Fair started at the Krishibid Institution premises in Dhaka on Friday as part of the National Fisheries Week 2018. Photo: Abdullah Al Momin

A five-day National Fish Fair started at the Krishibid Institution premises in Dhaka on Friday as part of the National Fisheries Week 2018. Photo: Abdullah Al Momin

Garment Workers' Trade Union Centre takes out a procession in front of the National Press Club in Dhaka on Friday, demanding Tk 16,000 as the monthly minimum wage. Photo: Mahmud Zaman Ovi

The Bijoy Sarani intersection is bedecked ahead of Saturday’s reception for Prime Minister Sheikh Hasina by her Awami League party at the Suhrawardy Udyan for her role in Bangladesh’s socio-economic development and achieving international awards. Photo: Abdullah Al Momin

The Bijoy Sarani intersection is bedecked ahead of Saturday’s reception for Prime Minister Sheikh Hasina by her Awami League party at the Suhrawardy Udyan for her role in Bangladesh’s socio-economic development and achieving international awards. Photo: Abdullah Al Momin

Students celebrate publication of HSC exam result at Notre Dame College in Dhaka on Thursday. Photo: Abdullah Al Momin

Students flash victory sign after publication of HSC exam results at Viqarunnisa Noon School and College in Dhaka on Thursday. Photo: Mostafigur Rahman

Students from other grades join HSC candidates to celebrate publication of HSC exam result at Holy Cross College in Dhaka on Thursday. Photo: Mahmud Zaman Ovi