The Nigerian Lagos State Authority has shut 70 churches and 20 mosques in an attempt to reduce high noise levels.
The crack of the whip also affected 10 hotels, pubs and club houses, according to an official source.
Lagos population estimated to be around 20 million do create a scary constant background of noise from the blaring of car horns, through the Muslim call to prayer, to the loud singing by churches.
The decision comes in the wake of the state government’s promise to make Africa’s biggest city, noise-free by 2020.
Bola Shabi, the general manager of the Lagos State Environmental Protection Agency said the current 35% attained in the noise reduction was inadequate and that the agency would no longer allow people to pray in makeshift buildings and tents.
He said: "Enforcement is a continuous exercise and we have set a target for ourselves. We want to ensure that Lagos is noise-free by the year 2020."
He also expressed his delight at the comportment of the affected churches, especially the mosques who he said complied with their instructions more than the churches.
Shabi said the mosques instantly bring down their speakers or reduce the noise they make.
In August, 2015 the Agency closed down 22 premises after residents complained about noise emanating from them.