A false alarm sparked fear of a possible chemical spill in Union Pacific’s Bailey Yards in North Platte on Monday.

Sirens sounded and text messages were sent after an employee overreacted.

Union Pacific spokesman Mark Davis said the employee overreacted when they saw some kind of discharge coming from a tank car.  However, it was discovered that the tank car was in a routine venting process.

Employees and residents are on high alert after a tank car filled with chlorine derailed just east of Bailey Yards last Monday.