This research uses habituation-recovery techniques to investigate young infants intermodal perception of moving object events. A fundamental of human perception is our ability to identify the spatial co-location of the sight and sound of an object. While there is evidence that newborns and older infants are sensitive to violations of audio-visual co-location of static visual and auditory events, nothing is known about infants co-location ability in moving object events, an important gap in knowledge given that such events are frequent in the infants world. This work investigates young infants ability to detect violations of audio-visual co-location in moving object events, varying the form of violation from the extreme case of opposed directions of movement of sight and sound, to more subtle violations such as disjunctions of amplitude and frequency, and small phase lags. We argue that such investigations are vital to further understanding of infant inter-modal perception.