stay away from gorsky lane near karlyn lane. >> i know you have more on that in skip pack. >> indeed i do. we have a chemical that caused a neighborhood to evacuate. let's go over to katherine scott live on the scene in skip pack township, good morning, katherine. >> reporter: authorities are trying to figure out what the chemical is. around 100 homes were evacuated last night due to the mysterious odor. an emergency shelter was set up, others are staying with friends and relatives. emergency crews and investigators have cleared out for now, but we are expecting crews on the scene later this morning. the county haz/mat, dep and epa are working to identify the chemical and the source. the township said there was high readings of a volatile organic compound in several homes. it appears to be coming from the sump pumps. a strong odor was reported at a house on gorski lane. the fire company responded with the meters and the meters went into alarms so they going and they found it in every home. >> we had 1.something and our neighbor had # point something and to open the windows and leave