Reno , Nevada – An armed man who was killed by a SWAT team after taking a woman hostage and opening fire on a street in downtown Reno from the eighth floor of a condominium may have been suffering from mental problems, said the police.

Ken Gallop, a police officer in neighboring Sparks, said Wednesday that his department is leading the investigation into the shooting that involved the officer Tuesday night.

A preliminary investigation indicates that the shooter was acting alone, he said in a statement. He said that the hostage woman escaped injury and nobody else was seriously injured.

"This case is being actively investigated, and no additional information will be released at this time," Gallop said. The gunman's name has not been released.

Reno Police Deputy Chief Tom Robinson told reporters that officials at the scene indicated that the suspect who appeared to be between 20 and 20 years old may have been seeing things.

It is unclear if he or the hostage lived in the Montage apartment one block from the main hard shoulder of the casino.

Stephen Paddock, who killed 58 people on the 32nd floor of a hotel-casino in Las Vegas, had a unit in the Assembly. Records show that he sold the property in December 2016.

Robinson said police do not know if the shooting could have been an imitator.

The building was once a casino before becoming luxury condominiums.

Private Chris Kelley of the Nevada Highway Patrol told the Reno Gazette-Journal that shots were fired from the building for at least 20 minutes, and TV reporters said they heard several shots after arriving, although the shots were sporadic, not constant. [19659008] Karl Fiebiger, a resident of the seventh floor of The Montage, quickly evacuated his condo after police informed him that they had secured the seventh, ninth and downstairs of the tower. The police told him that the shooter was on the eighth floor and worried that the stray bullets could penetrate windows and floors.

"Honestly, I knew the shooter was nearby, I could feel the windows vibrate, I could hear things falling from the walls," Fiebiger told the Gazette-Journal. "So I was very happy to evacuate because I knew I was not in the safest situation if the bullets started to fly."

Police said one of the phone calls they received about the shooting was of the woman inside the room with the suspect. In the end, the police negotiators were able to contact him as he continued shooting through the window.

"He was holding her against his will and he was not letting her go, so we were able to go in and get her safely," Robinson said.

The suspect was alive when he was taken into custody, but then died in a hospital in Reno.

Police closed several streets and evacuated the surrounding area when the gunman opened fire shortly before 7 pm Tuesday

"When you hear it coming from above, it reminds you of the man who shoots from Mandalay Bay," said Mike Pavicich , who was in town for business from Las Vegas and was standing over a parking lot in the neighboring Eldorado Resort. Casino when the shots rang.

"It's scary, you know?" Pavicich told the Review-Journal. "This is the same kind of city."

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