Cape Town - Two people were arrested for allegedly fatally shooting Metrorail driver Piet Botha at the Netreg station in Cape Town, Western Cape police said on Tuesday.Botha, 46, had been doing refresher training on a railway line and was waiting for a train on Monday when he was killed, according to the United National Transport Union.Police officers followed up information and arrested a 22-year-old for murder and illegal possession of a firearm on the same evening, said police spokesperson Constable Noloyiso Rwexana.Another person, 37, was arrested for illegal possession of a firearm on Tuesday morning.Rwexana said the arrest followed information about the possible murder weapon being kept in a house in Bishop Lavis."Police found the bag hidden under the bed in one of the rooms and arrested the suspect."Metrorail regional manager in the Western Cape, Richard Walker, told News24 that the fatal shooting was caught on camera thanks to a new system and the installation of CCTV cameras at stations.WATCH this News24 Live video:The shooting sparked fears among fellow train drivers for their safety in crime-infested areas.On Tuesday, the Congress of SA Trade Unions protested outside the city's office on Tuesday, where they handed over a memorandum demanding an improved public transport service and better safety for workers.The memo demanded that a guard be placed in every occupied carriage.Weapon allegedly used by the criminals. (SAPS)Metrorail offered its condolences to Botha’s family."Our hearts go out to his family who must face the loss of a husband and father. His death is an enormous blow to his family and his colleagues," Walker said.Walker also apologised to commuters for the inconvenience.