There's been another suspicious package found in a Hamilton park toilet.

The Melville Football Club is cordoned off and defence force bomb experts from Auckland are on their way.

A cleaner came across the suspicious package around 8.40am.

Senior Sergeant Andrew Townsend said it's too early to confirm the incident is linked to yesterday's, but police are keeping an open mind.

There was a bomb hoax in Melville Park yesterday, and two others in Gower Park last week.