FREDERICK, Md. (CBSDFW.COM/AP) — An overnight fire at a UPS center in Maryland has sent a yet undetermined number of packages up in smoke during this holiday season.

CBS affiliate WUSA-TV reports Frederick County Fire Department spokesman Kevin Fox says the fire was reported about 11:40 p.m. Monday.

(credit: Frederick County (MD) Fire & Rescue/Facebook)

When fire crews arrived they reportedly found 10 trucks and a package loading structure ablaze.

Fox says it took firefighter around 45 minutes to bring the blaze under control. He says the building suffered mostly exterior damage since a sprinkler system activated inside the main structure.

(credit: Frederick County (MD) Fire & Rescue/Facebook)

The investigation into the cause of the fire continues.

A representative for UPS says the company is working to identify and notify shippers of the damaged packages, as well as reroute packages that would have gone out on the damaged trucks.

Click here to find out what to do if your UPS package is damaged.

(© Copyright 2017 CBS Broadcasting Inc. All Rights Reserved. The Associated Press contributed to this report.)