Can a person holding poa for a property avail loan?

Hi,

Please consider the scenario below and enlighten me if there are any cases or advises made by court to banks regarding loan against property. 

An agent is having POA (power of attorney) to carry  out all the legal and financial activities such as sale, purchase of properties and opening of accounts etc. In such case can the banks raise an objection to provide loan against property. If so is there any judgement to advise banks to lend  mortgage property?

Thanks and regards, 

Ganesh