You can re-enable your Facebook account at any time by logging in. Remember that you’ll need to have access to the email or mobile number you use with your hacked Facebook login. If you cannot remember your password, then contact customer service for a new one.
How to recover permanently delete facebook account
How to Reactivate Facebook Account
If you delete your Facebook account, other Facebook users will still have access to the messages you sent. All of your data is stored in backup systems for 90 days before it is permanently deleted.
1. Follow the steps to recover your account.
2. Enter your email address and click “Next.”
3.. You’ll be asked a few queuestions about your account, answer as best you can.
4. If your account is recovered, create a new password that’s not already in use with this account. Find out how to create a strong password!
Once you delete your Facebook account, you’ll have a 30-day window to change your mind. All of the information on that account will be permanently deleted and inaccessible once those days are over.
The police themselves would not be able to access a deleted account without either obtaining the necessary court order or Facebook voluntarily handing over information.