A man is in hospital suffering a gun shot wound after an incident in Twickenham .
But when officers attended, they found evidence of a discharge of a firearm, but no injured persons.
Later, just after 11pm, police were alerted to a male having attended a west London hospital suffering a gun shot wound.
A Metropolitan Police spokesman said: "The two incidents are, at this early stage, being treated as linked.
"The Trident and Area Crime Command are investigating."
"A crime scene remains in place at Chertsey Road as enquiries continue," the spokesman added.
"There have been no arrests at this time."
The area was still taped off on Wednesday (August 2) with a police cordon in place.
Police ask that any witnesses, or anyone with any information, call them on 101, or through Twitter @MetCC.
To give information anonymously call Crimestoppers on 0800 555 111 or visit crimestoppers-uk.org.
For the latest on this incident, head to our live blog .
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