Has anyone seen the issue where it is impossible to delete items from an events list? We are unable to delete the items using the site admin account, site collection owner account and the domain admin account. We go through the steps and then get the following error:

Cannot complete this action.

Please try again.

Troubleshoot issues with Windows SharePoint Services.
It’s not a widespread issue, it’s just on the events list for one site. Just wondering if anyone had seen this odd behavior before?