Dana and Karen Bobo called for any information to help locate Holly who was violently abducted from her Tennessee home in front of her brother and mother on Wednesday.
Holly - the cousin of country music star Whitney Duncan - was last seen being dragged across the carport from her family home towards a wooded area.
Today her parents paid a tearful tribute to the 'thousands' of volunteers who have joined police in the hunt for the missing nursing student.
Barely able to contain his tears, Dana Bobo said: 'We've got thousands of people, we've got friends and neighbours and people we don't even know helping us.
When asked what he would say to his missing daughter he replied: 'I would tell her I love her, and tell her to call us.
'We are hopeful she is going to be brought back soon.'
Speculating on who may have abducted his daughter, Mr Bobo added: 'The way it looks to me myself, it might have been somebody close. Read More