(KLZA)-- Four men were arrested Saturday morning in Richardson County for hunting without permission on private property.  

The Richardson County Sheriff’s Office detained four Asian men from Lincoln on a property south of Salem.  

Three rifles were seized as part of the investigation and a Honda Civic with a Lincoln, Nebraska license plate was discovered hidden in tall weeds several hundred yards off the roadway.

According to the Sheriffs Office report, it is believed the men were in the field overnight.

Nebraska Conservation officers have reported they have been observing Asian groups from the Lincoln area hunting illegally in southeast Nebraska for the past year.  

The groups are allegedly hunting non-game song birds along with other animals.  

Area residents  are asked to be observant and report suspicious activity to the  Richardson County Sheriff’s Office or to Nebraska Game and Parks.