A 49-year-old man was killed on Midhurst Gardens at around 5pm yesterday afternoon (Image: David Nathan/UKNIP)

A forensic investigator can be seen interacting with a dog at the scene (Image: David Nathan/UKNIP)

A 22-year-old Afghan national was arrested at the scene on suspicion of murder and attempted murder (Image: David Nathan/UKNIP)

A 45-year-old man and a 14-year-old boy were also treated for stab wounds (Image: David Nathan/UKNIP)

A large police cordon is in place as police carry out their investigations into the "shocking" stabbing (Image: David Nathan/UKNIP)

The 45-year-old man’s injuries are believed to be life-changing but not life-threatening, while the boy’s injuries are not life-threatening or life-changing (Image: David Nathan/UKNIP)

Police are appealing to the pu

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