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OXFORD, Ohio -- A southern Ohio university has suspended two fraternities over an incident last weekend involving a fireworks battle between frat houses that police say led to the discovery of illegal drugs.

The Dayton Daily News reports that the Sigma Alpha Epsilon and Phi Kappa Tau chapters at Miami University in Oxford were suspended Thursday.

The university said the suspensions are temporary, pending the outcome of a full investigation.

Police say they responded early Sunday after reports that people in the houses were shooting fireworks at each other.

Officers who returned later with search warrants said they found drugs and paraphernalia, along with a stash of fireworks.

Charges haven't been filed, but police say they are pending.