Saskatoon police officers used a conducted energy weapon (CEW), also known as a taser on a 58-year-old man on Saturday.
A press release said officers were asked to help with a medical call at an apartment building in the 300 block of 6th Avenue North around 11:40 a.m.
Police say the man was upset that police and EMS were there and allege he picked up a butcher knife and charged at the officers and EMS.
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Once the CEW was deployed, the male dropped the knife and was taken into custody.
There were no reported injuries.
The man is facing charges of assaulting a police officer with a weapon.
This incident will be reviewed in accordance with Saskatoon Police Service policy.