Acqualina 1402 LLC is also suing Brown in excess of $15,000 for damages the star football player allegedly caused to the unit he was leasing.
The women denied taking the cash and the gun - and insinuated it could have been other people who were in the house in the days before Brown left for his trip. Police interviewed the women, who said they had been instructed to clean the apartment by one of Brown's representatives.
According to a lawsuit obtained by TMZ Sports, Antonio Brown is being accused of almost killing a toddler in April when he threw furniture off the balcony of his 14th-story apartment after becoming upset.
Police were called on April 24, following the balcony incident. When officers arrived, Brown was yelling at security "telling them he thinks they set him up".
The lawsuit filed contends two very large vases, an ottoman and other pieces of furniture landed just feet away from the child and his grandfather.
The pool area suffered minor damage from Brown throwing objects off the balcony as well. Security personnel determined that the objects were thrown by Brown from the 14th floor, and security video apparently exists; the lawsuit does not indicate whether Brown appears on the video.
On April 25, Brown called police to report that his black Rolls-Royce was stolen.
But, when cops showed up to his apartment, Brown said, "I found the car" and closed the door in their faces. KDKA-TV reported that a second lawsuit has been filed over the incident by the unit's landlord, charging that Brown damaged the unit and has not paid for damages.
Ophir Sternberg filed the lawsuit against Brown and is suing for assault and intentional infliction of emotional distress, TMZ reported.
Brown has not commented on the allegations. A message seeking comment from the Steelers was also not returned early Tuesday.