Donald Trump's father apparently bailed him out of a financial problem last month.

Fred Trump, 85, had an attorney buy more than $3 million in chips from the Trump Castle casino on Dec. 17, The Wall Street Journal reported.The money was enough for the younger Trump to make an $18.4 million payment due bondholders, surprising analysts who had said it appeared he lacked enough money to make the payment. The transaction raises questions about whether the casino might have skirted state reporting requirements.