WATCH Liverpool TV on beIN SPORTS | via Foxtel, Kayo, Fetch & beIN SPORTS CONNECT
The tie appeared to be heading back to Anfield for a replay with the game finely poised at 1-1, but the in-form Mitoma netted a spectacular late goal to put Brighton into the fifth round.
Liverpool took the lead via Harvey Elliott during an entertaining first half, but Brighton was good value for Lewis Dunk's fortuitous equaliser nine minutes later.
Brighton's continued positivity in the second half looked to set to go unrewarded, but Mitoma's ball juggling and cool finish sparked bedlam at the Amex Stadium as Liverpool's FA Cup defence crumbled.
