WAYNE, Pa. (CBS/AP) — Authorities in a suburban Philadelphia township are asking for help locating a woman who may have come in contact with a rabid raccoon.

Police were called to investigate reports of a raccoon growling and hissing at people outside the Wayne Post Office over the weekend.

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Witnesses said the animal knocked a woman to the ground but she left before police arrived.

“Chances are better than not that it is a rabid raccoon based on the way it was presenting itself. They are nocturnal creatures, they’re out at night. This was out during the day and it appeared to be very aggressive,” Lt. Andy Block of Radnor Township Police said.

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Radnor Township police found the raccoon a short time later and euthanized it. The animal is believed to have been rabid. Its remains were still being tested Monday.

Authorities say it is urgent that the woman who came into contact with the raccoon to contact the state Department of Health because she could have been infected.  She is described as a white female with dark brown hair wearing a green shirt and blue jeans at the time.

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