An improvised explosive device found in Buena Vista Tuesday prompted the closure of U.S. 24 in both directions and all the city's schools to be placed on lockdown, according to Chaffee County spokeswoman Laura Smith.

The device was described as a mortar round with wires and a cell phone attached to it, according to Smith. Officials later determined it was a practice round.

The highway reopened after 4 p.m.

Maintenance staff at the Buena Vista Public Library discovered a bomb about 7:15 a.m. placed in the back of a truck between the library and the Buena Vista police department off Linderman Avenue and West Main Street, Smith confirmed.

All Buena Vista schools were on lockdown and a code red alert was sent out to the public in the surrounding area of the bomb, Smith said.

Read more on this report about a bomb scare in Buena Vista at Gazette.com.