I have POA for my brother he is in a nursing home now but has his home, He wants me to get stuff for him at his home. His X son in law lives there, I went to home and he let me in then when I said I am here to get stuff for my brother he called police. A policemen came and I showed papers but the policemen butt me out. two weeks later i took my brother to police so they know and again they wouldn't let me go in with my brother. what good is the POA??
We made it clear that if there was any dispute over property rights of an item, it would have to remain in the residence and the could file for a court order.
Even if your father showed up there in person, the officers would likely not allow him to take any items that were in contention.
The proper recourse is for your father to file for a writ of replevin. There is a good chance that your POA does not cover civil actions.