Alberta's police watchdog said it'll likely be at least another month until the initial investigation into an incident involving a Lethbridge police officer who ran over a deer with his truck is complete.

As of Sunday at 2 p.m., an online petition demanding the firing of the officer had more than 66,000 signatures.

In the almost 15-minute video, shared exclusively with Global News, a police officer runs over the injured animal slowly with his truck several times.