Foreclosure purchase - Unknown occupant whereabouts

[Cody Wirz]

I am in the process of purchasing a foreclosure.  The bank says it is still occupied, however it appears to be vacant.  Once I completed the purchase can I enter the property if I think it is vacant or do I have to go through the formal eviction process?  I am leaning toward going in and seeing if there any signs of an occupant, but to also start the official eviction process.  Any advice?  If it is vacant do I as the new owner have the right to start a rehab or do I have to legally ensure occupant is evicted before I can enter the property?  The property is in Texas.