A man was detained at the scene and cordons currently remain in place on the street.
Ms Egan has said: “This is an extremely concerning incident which will have caused distress to many in Bangor.
“No one wants to see guns on our streets or threat of harm against anyone in our community, and I want to thank the PSNI for their quick and diligent response during what has been a very stressful, challenging weekend for them.
“I’m sincerely grateful nobody’s been seriously injured, and that whoever’s responsible has been taken into the care of the appropriate authorities.
“I’ve been engaging with PSNI and will continue to do so as things progress.”