West Midlands Police has objected to the planned site in Smethwick which will become a new leisure centre after the 2022 games.
The force has made an objection to Sandwell Council over fears about a lack of protection from terrorist attacks.
Sandwellâ€™s planning committee is due to decide whether to approve the planning application at a meeting tonight.
The state-of-the-art facility, earmarked for Londonderry Playing Fields, would cost Â£60million to build and host swimming events at the Birmingham 2022 Commonwealth Games.
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