Charges have been laid in the east end of Cobourg following an altercation early Wednesday morning.
Just after midnight, police responded to a report of an argument between two people.
Cobourg police say during the incident a woman threatened a man with a metal bar, charging at him.
One witness was able to take the weapon away.
The woman fled but was arrested a short distance away.
A 30-year-old from Port Hope is charged with assault and failing to comply with probation.