An 18-year-old man is being held for potential custody following a fire in a stairwell on Barnhemsgatan in central Linköping on Sunday morning. Authorities suspect arson and have requested the Linköping District Court to issue a detention order. The incident occurred early Sunday, prompting a police investigation. Details surrounding the motive remain unclear at this time. The young man is currently the primary suspect in the case. Court proceedings are underway to determine if he will be taken into custody while the investigation continues.