Youth players accused of killing Dutch linesman Richard Nieuwenhuizen to remain in police custody The 16 year old could be jailed for a maximum two years, unless judges rule that he should be tried as an adult and face a stiffer penalty. The precise charges will be refined based on the results of an investigation by police and prosecutors, added Brigit Haan, spokeswoman for the Lelystad Prosecutor's Office. "There are many things we need to investigate," she said. Dutch popular daily De Telegraaf reported on Thursday that the fatal beating may have been caught on camera by the sister of the Buitenboys goalkeeper who was taking pictures at the match. The murder prompted Dutch football federation KNVB to call off all 33,000 of this weekend's amateur matches, with professionals holding a minute's silence and players wearing black armbands. Former Dutch international player and current Feyenoord manager Ronald Koeman said it might have been better if professional Dutch matches had also been cancelled this weekend. "Perhaps professional football should have joined this statement," he told radio programme Evers Staat Op. "I think that would have made the statement sink in deeper." You don't just see this in football. I think that it's a big problem in society with the upbringing of the youth of today," he said. Players at the opening match of the Club World Cup in Yokohama between Sanfrecce Hiroshima and Auckland City FC observed a minute's silence Thursday in Nieuwenhuizen's memory, Fifa said on its website. The Buitenboys club said on its website that a silent march in Nieuwenhuizen's memory set for Sunday would only be for local football club members and invited guests, following a request from the family.