OTTAWA -- Ottawa Police are urging motorists to drive with caution as plunging temperatures create slippery road conditions across the region.

River Road was temporarily closed  Friday morning between Earl Armstrong Road and Leitrim Road due to icy road conditions.

Police tell CTV News Ottawa there were three collisions on that stretch of road between 6 a.m. and 8:45 a.m. Also, several cars reportedly slid off the road and into a ditch.

Only minor injuries were reported. 

Ottawa received 17 cm of snow and 3.5 mm of rain on Thursday. The cold temperatures that moved into the region have created slippery road conditions.