Ammon News - AMMONNEWS - A mass shooting at the Mandalay Bay hotel and resort on the Las Vegas Strip took place Sunday night, leaving at least 50 dead and 100 wounded.

The attack happened at the Mandalay Bay Hotel and Casino during the Route 91 country festival.

According to the Las Vegas police, the shooter fired into the crowd from the 32nd floor of the Mandalay Bay hotel.

Cole Watson, who was at the concert with his wife and kids, said "at first it sounded like someone was setting off a whole lot of fire crackers".

He said when they "realised it was gunfire and everybody started running”.

"The scene was insane - it was absolute chaos," Watson told Al Jazeera by telephone.

He said he saw several injured people when he and his family ran from the scene of the attack.

Videos posted on social media the crowd ducking for cover as multiple shots can be heard.

During a press conference, Las Vegas police said at least 20 people had been killed and more 100 were injured, but that a precise number of victims could not be given yet.

Watson and his family immediately went to a hotel, where he and his family were staying.

“We are on lockdown now and police is going door to door checking on people," he said.

"There are still people walking by with blood on their shirts. There is police everywhere and there are two helicopters flying overhead.”

According to Watson, security showed up "almost immediately".

Two on-duty police officers were shot, one of them is still in critical condition, police said during a press conference.

Police said the suspected shooter, an unnamed Las Vegas resisdent, was killed in a shootout with police in the hotel hotel room where he was shot.

An official added that police are still looking for a possible accomplice, who is wanted for questioning.

* Al Jazeera News