Police are conducting forensic searches of a street in Moortown after reports of shots being fired.
The incident was reported just before midnight last night on Cranmer Bank on the Camp Town estate.
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Callers claimed to have heard loud bangs and seen a number of cars.
Police then found evidence of a car crash, but no suspects or cars remained at the scene.
Later this morning a further report was made of a firearms discharged.
West Yorkshire Police said:
"At 11:44pm last night police received a report of a suspicious incident in Cranmer Bank, Moortown, involving a number of cars with loud bangs being heard.
"Officers attended and searched the area but no vehicles or suspects were found. Evidence of a road traffic collision was found at the scene.
"Further information was received this morning reporting a potential firearms discharge in relation to the earlier incident.
"A scene has been put in place in Cranmer Bank to undergo a specialist search and forensic examination and enquiries are ongoing."