Armed police swooped on an address in Batley in the early hours of this morning, following reports of gunshots, hours after a car chase through the streets of the town.
They found the address on Conway Crescent empty.
They are linking it to the car chase around 6pm on Friday evening in which a red Audi was pursued by a Volvo along Upper Road.
The chase continued into Halifax Road, narrowly avoiding a collision with other traffic, before going into the car park at Staincliffe Hospital.
One of the passengers in the Volvo was seen leaning out of the window, possibly holding a gun. No shots were fired.
Police are treating the incidents as “targeted attacks” and are appealing for further information.
Detective Chief Inspector Steve Snow, of Protective Services (Crime), said: “Due to the manner in which these two cars were seen driving and the fact they entered a hospital car park, we believe that someone will have witnessed the incident or perhaps made a note of their registration plates, as they nearly caused a collision with other vehicles as they entered Halifax Road from Upper Road.
“We would like to speak to anyone who witnessed cars of these descriptions driving erratically in the area at just before 6pm yesterday, or anyone who saw a silver/grey Volvo V60 being abandoned in suspicious circumstances at any time after 6pm.
“We would also like to hear from anyone who saw a black car leaving Conway Crescent around the time that the shots were heard.
“High visibility patrols will continue in the area today and will speak to residents about any concerns they may have.”
Contact police on 101 or Crimestoppers on 0800 555111.