The Terminator 2 and American History X actor was arrested this morning (October 30) after allegedly getting into a physical argument with his girlfriend, reports TMZ.
A police spokesperson stated that Furlong was with his partner at LAX airport at around 1am local time, when he grabbed her arm.
Furlong was immediately taken into custody after officers discovered visible marks on her arm.
The actor is currently in jail, with bail set at $50,000.
In January 2011, the troubled actor revealed that he was "totally broke" and that he was unable to meet his child support payments.
His former wife Rachael Kneeland filed a restraining order against him in 2010 following a number of threatening emails.