Complex sentence: The provincial judiciary launched an investigation into the cause of the explosion; primary suspects were Litoral Gas (the natural-gas provider for Rosario) and an employee who carried out maintenance work at the building that day.
Split into simpler sentences: The provincial judiciary launched an investigation into the cause of the explosion. Primary suspects were Litoral Gas (the natural-gas provider for Rosario) and an employee who carried out maintenance work at the building that day.