Forensic investigations are underway after reports of gunshots in Leeds.
Armed police were called to Back Thornville Row, Hyde Park, at about 2.20am today (Wednesday).
A member of the public had reported a possible firearms discharge, a spokeswoman for West Yorkshire Police said.
Read more: Leeds road closed as forensic officers investigate police scene
Officers found no evidence of injuries, or damage caused to property, when they arrived at the scene.
Now early investigations have revealed that blank ammunition - cartridges that do not contain projectiles - could have been used.
A police cordon is in place at the scene while forensic tests are carried out.
The spokeswoman added: "Forensic examination remains ongoing today and a cordon remains in place but early investigation indicate that blank firing ammunition was used with no evidence of an actual firearms discharge. "
Anyone with information is asked to contact Leeds CID on 101, quoting crime reference 13180379240.
Information can also be passed to independent charity Crimestoppers anonymously on 0800 555 111.