It was Holt`s third hat-trick for City as he surpassed the 50-goal mark for the club with a near-post finish, a penalty after Iron defender Paul Reid had been sent off, and a well-placed header to complete his treble.
Jackson came on to score a stunning hat-trick himself to condemn the visitors to a ninth consecutive away defeat.
The 6-0 result cements second place for City and moved them six points behind leaders QPR.
Source: PA
Source: PA