The masked women forced their way into the apartment and forced the female occupant to the floor at knifepoint, and then bound her.
The intruders then rummaged through the apartment, but it is unclear if anything was stolen, according to police.
The female victim, who lay bound on the floor for at least half an hour before she was discovered by her son, did not receive any injuries but was seriously shaken by the attack. While the police did not release a description of the suspected burglars, it was reported that the victim did not know them.
The police have classified the crime as a personal robbery.