Add XElement to another XElement in specific location

Question

My XML

<Bank>
 <Customer id="0">
  <Accounts>
   <Account id="0" />
   <Account id="1" />
  </Accounts>
 </Customer>
  <Customer id="2">
  <Accounts>
   <Account id="0" />
  </Accounts>
 </Customer>
</Bank>

i want to add  new account element before customer id=2.

i have this xml in xelement and i want to add other xelement to the first. how can do that?

Thanks for the help.