POSTED: Wednesday, April 17, 2013 - 1:52pm
UPDATED: Wednesday, April 17, 2013 - 3:29pm
Farmers Branch, TX (KETK) — Authorities have confirmed the suspicious mail sent to U.S. Senator John Cornyn, tested negative for poisonous substances.
Earlier on Wednesday, according to the Texas Tribune, authorities confirmed they were investigating a piece of mail sent to U.S. Senator John Cornyn's Farmers Branch office.
KETK will update information as it becomes available.