DALLAS Dallas SWAT has been called to the scene where a possible active shooter was reported in the Victory Park area.

Residents at the Vista Apartments complex in the 2300 block of N. Houston were warned to stay inside their residences through an email.

According to sources, a 45-year-old man is barricaded on the fifth floor of the building. Police indicated the situation is contained. The sources said he was having a difficult time with management and may have shot out a window.

We are dealing with an emergency situation at this time, read an email from Vista Management. There is an armed individual onsite andthe police are activelyattempting tocontrol the situation. Please REMAIN INSIDE YOURAPARTMENTS until further notice.

A resident on the second floor of the building described her fear when she first heard screaming in the morning.

I heard some screaming outside in our hallway, said Laci, who wanted to be identified by her first name only. ... So, I've been hiding in my closet. They just told me it's on the fifth floor, so that makes me feel a little bit better.

Laci said she received the email warning residents at about 10:30 a.m.

The nearby Perot Museum, W Hotel, Dallas Aquarium, Lunar Prep Academy and Booker T. Washington have been locked down and the House of Blues has closed.

Northbound Houston and Lamar streets have been closed. Police said Olive, Museum Way, Highmark and Victory Park are closed.

WFAA's Tanya Eiserer contributed to this report

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