The Center for Environmental Sciences at St. Louis University says the quake came from "some faults outside the Wabash and New Madrid Zones," The St. Louis Post Dispatch reported.

One St. Louis County policeman said he felt the ground shaking for about five seconds and saw the roof moving.

Officials said Monday's quake had no connection to last month's 5.2 magnitude quake that that occurred some 130 miles east of St. Louis.

"There are a few faults under Eureka and House Springs that have small quakes every 10 to 20 years," says Timothy M. Kusky of St. Louis University. "Generally, they're magnitudes between 2 and 3.