Quote from @Richard F.:
Aloha,
No legal advice here, and VERY dependent on local law, but...based on the limited info you provided, I would check several items:
Did they turn off the utilities, or has the utility company turned them off due to non-payment? What does the apartment actually look like...did they just walk out one morning with coffee cups on the kitchen table, clothes in the closet, multiple pairs of shoes, medicine cabinet looking normal, perhaps with toothbrushes still in place? or, is the place trashed, with very little of true value, drawers mostly emptied or dumped out, clothes, meds, family photos, personal care items all gone? Was the door left standing open, unlocked, or properly secured? Is mail accumulating, or did the USPS get forwarding instructions? Were any keys left on a counter or hanging on a keeper in the entryway that are for the unit? Does the refer appear to have recent groceries, mostly empty, or all rotted? Some people just live like animals...do you have an idea of what it looked like, in terms of their personal property, 3 months ago?
Based on answers to above, if I truly believe it is abandoned, I would document findings with lots of photos, and, after reaching out to employer, family, and references from their application and any other sources, I would shovel it out and move forward if no one was forthcoming with info or contacting the people. Again, no legal advice, but with experience you might follow your gut, being aware of the risk.
Did you send/post proper notices and try to contact them when they first missed rent payment?
Yes, we did. There was no response from them via phone or mail