Six people were injured in a head-on crash between an SUV and an MBTA bus in Saugus Sunday afternoon, Transit Police said in a statement.

The collision occurred in a residential area near 190 Essex St. around 3:50 p.m. Sunday, when a Ford SUV struck a northbound Route 429 MBTA bus that was heading toward Lynn with four passengers aboard.

The SUV, driven by a 37-year-old woman and originally traveling in the lane opposite the bus, may have struck a parked vehicle, “causing the Ford to veer into the MBTA’s bus lane of travel striking it head on,’’ police said in the statement.