World Cup mattresses have not revealed Belgium squad, insists Martinez
Television footage in Belgium suggested that 23 mattresses sent to Russia, marked with players' names, had revealed which five members of the preliminary group will be cut from the squad.
But Martinez, whose side face Portugal in a friendly on Saturday, is adamant that he has yet to confirm his selection and so any supposed list is false.
"This is not a job for private detectives," he told a news conference. "With a simple phone call to our press officer, it would immediately be clear that there is no definitive list yet.
"The story should have stopped there. There is nothing to explain, because there is nothing about the story. There is no list of 23 players that has already being sent.
"The following days will be crucial, to get the medical information and see how we play against Portugal."
R Martínez : "The story of the mattresses is not true. Nobody sent a list to anyone." #REDTOGETHER #WorldCup #BELPOR
— Belgian Red Devils (@BelRedDevils) June 1, 2018
European champions Portugal are continuing their own preparation for the finals, with coach Fernando Santos keen to stress that his side have no need to fear heavyweight opponents like Belgium.
"There is nothing to fear; Portugal are not a team of fear and the coach much less," he said.
"We have respect for all opponents, regardless of the name, which is what led us to achieve the results we have achieved to date.
"This is a different challenge. We know the qualities of Belgium, a fantastic, powerful team with very creative players. It will be a great test.
"We know the team because we have a plan designed to have players ready for every game at the World Cup. Our strategy has made us champions of Europe. We know how we got there."