Local politicians had already given their permission, but the police also had to give their green light as it was seen as a matter of public order.
The decision means that a call to prayer, or adhan, can be made for between three to five minutes in length between 12pm and 1pm. There are also several limitations when it comes to the volume of the loudspeakers and where they will be pointing.
Fittja has a large immigrant population, many of whom come from Turkey. The mosque is located by a major highway, almost a kilometre from the closest houses, according to news agency TT.