NEWARK, Del. (WPVI) -- People who run the trails near Phillips Park in Newark, Delaware are being warned to keep their guard up after a female jogger was beaten by a masked man Monday night.The victim told police she was on the James Hall Trail around 8:45 p.m. when someone knocked her down from behind and repeatedly punched her face.The man then took off without taking anything.The victim is recovering around the hospital.Authorities are working on a suspect description, but don't have much to go on.