The non-lethal strike in Surrei is treated as an incident of terrorism by the police.
The cops were summoned to reports of a man who aggressively acted and shouted racist comments while wearing a baseball bat and a knife at Stanwell on Saturday evening at 22:30. Several vehicles nearby were damaged.
Shortly thereafter, the police received reports that one man was stabbed – and the detectives believe the same suspect stands behind both incidents.
Armed police urgently started looking for a suspect, and a 50-year-old man was later arrested on suspicion of attempting to murder and racially violate public order.
Police in Surrey said the 19-year-old man, who was stabbed, received life-threatening injuries and was treated at the hospital.
Assistant Commissioner Neil Basu, the head of the police for the fight against terrorism, said: "Although this investigation is still in its infancy, it has features of a terrorist event, inspired by the ultimate right, and is therefore declared the incident of terrorism.
This allows us to take advantage of all available specialist skills to determine the complete circumstances of this attack.
"Police are committed to tackling all forms of toxic extremist ideology, which has the potential to jeopardize public safety and security."
He added that local officials provide assurances and security advice to communities, places of worship, and businesses.
Supervisor of Detective Karen Mizzi added: "This is a shocking and worrying incident and we are working to support our counterparts in the South East Terrorism Police in their investigations and we will continue to connect with the local community.
"I want to persuade the inhabitants to do everything in our power to ensure that a thorough investigation is carried out and to support those who are affected by the events of the past.
"The patrols will be reinforced by Stanwell in order to provide those who are in the area especially around the mosques and increasing engagement with the communities of all faiths, giving advice on how people and places can be protected."
Police are not looking for anyone else in connection with last night's incidents.