Ontario’s police watchdog says a Hamilton police officer has been charged with aggravated assault in connection with an arrest made earlier this year.

The Special Investigations Unit says a 59-year-old woman sustained a serious injury during her arrest on Feb. 23.

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It says its investigation has concluded there are reasonable grounds to believe that the constable committed a criminal offence.

The SIU did not provide details about the nature of the arrest or the woman’s injuries.

The watchdog says the accused officer is expected to appear in a Hamilton court on Oct. 20.

It says it will not be providing any further comment on the case while it’s before the courts.