Police have since charged a man, Robert McWhir, 25, with murder. He will face court today.
A resident told Cambridgeshire Live: "I heard a man at about 2am. He was making like a 'rah' noise.
"Then a woman came down the road on her own and came back with another woman who was crying.
"The man came running back round and was shouting 'She's dead under the bridge'."
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