A child was "hit by glass" after an object was thrown and "deliberately smashed" a window at a family home.
The incident was reported on Wednesday, July 28, at around 2.15pm after a window was smashed at a property on Elephant Lane in Thatto Heath, St Helens.
Merseyside Police said a "youth, dressed in black with his face covered", threw an object at the window and then made off from the scene.
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The force has confirmed CCTV and witness enquiries are ongoing and are asking anyone with any information regarding the "reckless act" to come forward.
The child hit by glass during the incident sustained minor injuries.
In a statement, Merseyside Police said: "We are appealing for information following an incident in Thatto Heath on Wednesday 28 July.
"At around 2.15pm it was reported a window was deliberately smashed at a property on Elephant Lane.
"It was reported a youth, dressed in black with his face covered, threw an object at the window and then made off from the scene.
"A child was hit by glass during the incident and sustained minor injuries.
"CCTV and witness enquiries are ongoing and police are asking anyone with any information to come forward."
Detective Inspector Sue Hinds said: "This was an appalling incident, leaving a young child injured, and we are doing all we can to find those responsible and bring them to justice.
"Such reckless acts of criminal damage will simply not be tolerated on Merseyside and we would ask anyone with any information to come forward.
"If you were in the Elephant Lane area yesterday and saw anything or anyone suspicious, or captured anything on mobile phone or dashcam then please let us know. Any information you hold could prove vital to our enquiries."
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Anyone with information on the incident is asked to contact Merseyside Police social media desk via Twitter @MerPolCC or Facebook Merseyside Police Contact Centre with reference 21000525967.
You can also call 101 or contact the independent charity Crimestoppers anonymously, on 0800 555 111 or via their online form here.
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