Don't try to kill the bees yourself
The bees could have been looking for a new nesting site after their nest was disturbed, said a manager at pest control company Clean Solutions.
Mr Azlam Shah, 33, said: "Bees are attracted to light and areas that are cool."
He said it is not common for bees to cluster indoors. Clean Solutions encounters an average of two or three cases a year.
Residents who encounter swarms of bees in their homes should leave the affected room, close the door and get a pest controllers to get rid of the bees.
Mr Azlam said: "Do not disturb the swarm and do not try and kill the bees on your own such as spraying pesticide at them. They may attack you."