Police and national park officials are investigating reports a 4x4 vehicle has been left near the summit of Snowdon.It comes less than a month after a similar incident.Staff at the Snowdonia Mountain Railway arrived at the visitor centre near the summit to find the maroon vehicle parked near the building.Alan Kendall, general manager of the railway said \"This is a very irresponsible thing to do.\"\"After we found the vehicle this morning, we checked the point mechanism on the line to ensure that no damage had been caused overnight. Our trains are running.\"We have a very busy weekend ahead of us and this vehicle will not be moved until next week at the earliest.\"To move the vehicle sooner would mean suspending trains and spoiling visitors\' plans. We won\'t be doing that.\"North Wales Police were told earlier on Thursday that a vehicle was parked near the summit building and their inquiries are underway.Snowdonia National Park officials are also investigating.A 4x4 was found abandoned on 3 September, 365m (400 yards) below the summit.It was eventually taken down by the mountain railway on a trailer. From / BBC