January 14, 2014 (CHICAGO) — Some Chicago residents say the U.S. Postal Service is delaying delivery of their packages.

Postal officials say there is a reason they have been slowed down.

Call it the polar vortex pileup. Last week’s extremely cold weather meant the postal service was not delivering at full capacity. It caused a backlog of packages at the Wicker Park branch of the post office, which services the West Town neighborhood. Residents there have been waiting several days for deliveries.

via Some Chicago USPS package deliveries delayed | abc7chicago.com