Mya, 4, and Nathan Rollman, 3 were last seen with Zachary Rollman. (Pennsylvania State Police) BERKS COUNTY, Pa. - Police in Mohnton Borough, Berks County are searching for two missing children who they believe may be in danger.Mya, 4, and Nathan Rollman, 3, were last seen with Zachary Rollman, 29.Rollman is driving a 2016 black Chevy Colorado pickup truck with PA Reg ZNF-0964, according to police.Zachary Rollman (Pennsylvania State Police) If you have any information, please contact 911 immediately.___AdvertisementFor the latest local news, sports and weather, download the FOX 29 News app.DOWNLOAD: FOX 29 NEWS APPSign up for emails from FOX 29, including our daily Good Day Digest newsletter!.