Police are appealing for witnesses after a man was hit over the head with a cricket bat during the Vaisakhi celebrations in Southall.
On Saturday April 11, a 21-year-old man went to Southall Broadway for the annual 'Vaisakhi Nagar Kirtan' Sikh festivities, a procession which celebrates the birth of the Khalsa in 1699.
At around 3.15pm, police said the man decided to leave and walk home through Southall park, in Boyd Road, passing a group of men playing cricket.
As he passed he was hit over the head, from behind, with a cricket bat.
He fell to the floor and was left unconscious for a period of around 10-15 seconds, a Met Police spokesman said.
Officers were flagged down by members of the public alerting them to the incident.
London Ambulance Service was called and the man was taken to a west London hospital where he was treated for a blood clot on the brain. He has since been discharged.
No arrests have been made but officers from Ealing CID are investigating and enquiries continue.
Officer in the case, DC Jaspal Bains, said: "The area was very busy that day due to the Vaisaki celebrations taking place and I am appealing to anyone that was in the area that saw this assault to contact me."
Anyone with any information is asked to call Ealing CID on 101 or anonymously through Crimestoppers on 0800 555 111.