A female pedestrian is in a serious condition after being hit by a bus in central Auckland - the second in two days.

Photo: Supplied

Emergency services were called to the corner of Wellesley and Hobson Sts at 9.20am.

A witness said police were looking at the front right wheel of the Inner Link bus.

Police said the serious crash unit is at the scene.

Yesterday, a parked tour bus rolled back and struck pedestrians in central Auckland.

Multiple investigations are underway into yesterday's incident.