Aston Villa have reacted with disappointment and apologised to West Brom after crowd problems during their FA Cup win.

The Football Association is set to investigate following two pitch invasions from the home fans while Albion supporters threw seats into the Villa crowd.

Villa won 2-0 to reach the semi finals but the game was temporarily stopped after the first pitch invasion before fans ran on to the surface again at the final whistle.

Seats were also thrown from a section of Baggies supporters from the North Stand during the second half.

And Villa have said sorry for the problems which they believe marred the celebrations.

"The club does not condone supporters invading the field of play under any circumstances," a statement read.

"We are very disappointed that what should have been a very memorable and proud moment for our fans was marred by the actions of those who could not control themselves.

"They have let both themselves and their club down.

"The club extends its sincere apologies to the Football Association, the West Bromwich Albion directors, manager Tony Pulis and all his staff and players."

Albion boss Pulis criticised the stewarding at Villa Park and felt the players' safety was in jeopardy but confirmed his squad were fine.

He said:"It puts the players in danger and we don't want to see that. We were seeing it in the 1970s and 80s and we don't want to get back to that.

"I actually think Villa should look at the stewarding."

Fabian Delph, who described the pitch invasion as "scary", scored his first goal in a year before ex-West Brom loanee Scott Sinclair added a second late on.

Claudio Yacob and Jack Grealish were also sent off after collecting two bookings as both sides finished with 10 men.