(NewsNation) — A video showing multiple men walking around a Colorado apartment complex carrying weapons has sparked concern in the community.

Footage shows the group entering an apartment building, carrying what appear to be rifles and handguns, except for one man on a cellphone, NewsNation affiliate KDVR reported. In the video, the men then gather around a door and go inside.

“It’s been a nightmare and I can’t wait to get out of here,” former resident Cindy Romero, who lived in the apartment complex until Wednesday, told KDVR.

Aurora police said in a statement they have “seized evidence seen in the video” as part of an ongoing investigation, according to KDVR.