A small group of Queensland university students were allegedly set upon by around 50 students from a rival college in an incident being investigated by police.

The prestigious King’s College at the University of Queensland is at the centre of the investigation after an alleged victim was hospitalised.

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Last Thursday, six St Leo’s College boarders were walking across a cricket oval at the St Lucia campus in Brisbane when they were allegedly chased by the large group from King’s.

An 18-year-old St Leo’s resident was allegedly tackled and had his nose broken.

FILE IMAGE of King’s College at the University of Queensland in Brisbane. Credit: Barnsley, Warren / 7NEWS

Police were called the next day when the teenager was taken to hospital.

The alleged ambush was believed to have been sparked over a broken window at an office at King’s.

King’s College says it has “zero tolerance for aggressive behaviour and is awaiting the results of a Queensland Police investigation”.

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St Leo’s head of college confirmed an incident had occurred but wouldn’t comment.

Police are still speaking to witnesses.

No charges have been laid.