Police have blocked off the area around a Minnesota dental clinic as the dentist who killed Cecil the lion prepares to return to work. Walter Palmer is expected to return to his Bloomington dental practice Tuesday after weeks out of the public eye. Palmer was the subject of an international uproar after he was identified as the hunter who killed the famous lion in Zimbabwe. Palmer says he trusted his tour guides and believes he acted legally. Read: Hunt on for big game hunters Read: US woman under fire for celebrating her killing of giraffe Tuesday morning, a dozen media tents are set up outside, with camera lights lighting up the entrance to Palmer's practice. Several staff members have arrived and one warned reporters "this is private property." There are no protesters, but messages posted on the door read: "Justice for Cecil" and "May you never hunt again."