Actor Terrence Howard has been accused of attacking his ex-wife Michelle Ghent during an argument in Costa Rica.

The Hustle & Flow star and Ghent divorced in May (13), but reunited to take a holiday with family members last week (begs 29Aug13).

Howard claims Michelle maced him, his adult daughter and another family member and police were called to the scene, where reports were filed, according to

Both sides claim the other is lying about the events leading up to the altercation, with sources claiming the actor made up the mace claim as an excuse for lashing out, while he insists he never became violent.

Ghent is reportedly planning to file a restraining order against her ex.

It's not the first time the former couple has been at the centre of an altercation story - in 2011, Ghent claimed that Howard was violent with her during their marriage, alleging that he assaulted her several times over the course of a year. The actor has denied the allegations against him.

The couple wed in 2010 and split a year later. Ghent first filed for divorce in February, 2011.