A linesman was hit by a smoke bomb thrown by away fans during Aston Villa’s defeat to Tottenham.
The FA today vowed to investigate after linesman David Bryan was struck by the flare thrown from the Spurs fans in the Doug Ellis Stand as they celebrated Andros Townsend’s opener.
He recovered to continue as Tottenham eased to a 2-0 win after Roberto Soldado’s second half strike yesterday.
But the FA condemned the incident and insisted they will probe the event which shocked Villa Park.
An FA spokesman said: “The FA will investigate this matter, which is unacceptable.
“We will await the match officials’ report and will be speaking to the clubs. Such incidents highlight the dangers of pyrotechnics being used in a football stadium.”
Spurs boss Andre Villas-Boas also hit out at the culprits.
He said: “It is not great to see. It should be avoided completely. It touched the linesman and situations like this don’t have a place in football. I sincerely hope it doesn’t happen again.”
West Midlands Police have arrested two men aged 25 and 47 in connection with the flare being thrown.
They were today released on bail.
Meanwhile, police also arrested four fans after trouble broke out during Wolves’ match against Coventry.
Police and stewards made chase after fans tried to get on to the pitch. Bottles were also thrown by an away fan who was taken out of the ground.
West Midlands Police confirmed that two Wolves supporters and two Coventry supporters were all arrested for pitch encroachment.
This month a Manchester United fan was handed a three-year football banning order after throwing a smoke grenade during Sir Alex Ferguson’s final match in charge at Albion in May.
Karl Henson, from Eccles, was also given an eight-week jail term, suspended for 12 months, for throwing the grenade during the 5-5 draw at The Hawthorns last season.
The court also ordered him to pay £300 costs and an £80 victim surcharge after he threw the grenade from the Smethwick End.