US President Donald Trump took aim Wednesday at Amazon, claiming the US online giant pays too little in taxes and hurts other retailers.

(Screenshot via Trump's official twitter account)

"I have stated my concerns with Amazon long before the Election," Trump tweeted.

"Unlike others, they pay little or no taxes to state & local governments, use our Postal System as their Delivery Boy (causing tremendous loss to the U.S.), and are putting many thousands of retailers out of business!"