Looking to get solid advice on how to remove these squatters

[Eric Hunter]

Hi everyone I am here in Richmond VA where I purchased a property that the owner allowed the tenant to live rent free for 4 years before selling to us. The tenant has not been available to reach I have went by the house several times where I have had no luck reaching them all doors were locked & I have no key. The seller had no lease to provide to me as there is no current lease in place in the last 4 years.

Asking for some solid advice on how to proceed from fellow landlords.  ( Sensible feedback only ) Thanks!