No injuries reported after 3.7 magnitude tremor woke residents

Falls City, Texas - A small earthquake awoke residents in south Texas, but there are no reported injuries.

The U.S. Geological Survey says the 3.7 magnitude quake happened shortly before 5 a.m. Monday about 45 miles southeast of San Antonio.

The quake was detected about 6 miles southwest of the Karnes County town of Falls City, in an area near the line with Wilson County.

The epicenter was at a depth of about 3.1 miles.

Law enforcement authorities say some residents of Wilson counties reported feeling the quake.