Police were called shortly before 6.30am on Saturday, 22 May to reports of a fight on Tulketh Brow in Preston.
Officers attended the scene, and two men aged 32 and 29 were subsequently arrested on suspicion of assault.
They have been bailed pending further enquiries and an investigation is ongoing.
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A resident posted in Ashton & PR2 Community Group and said: “What looks like a very serious incident at Tulketh Brow this Morning.
“A section of the Pavement is taped of and a heavy blood scene is visible. Hope everyone is ok!”
Anyone with information should contact police on 101 quoting log 0368 of 22 May.
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