Investigators established that the man had been in contact with Mr De Massy on Boulevard du Larvotto after reviewing CCTV footage from the area. He was detained on Monday morning for questioning.During police custody, the suspect rejected the allegations put to him. When subsequently brought before the investigating judge on Wednesday, he declined to respond to any questions.Mr Thibault indicated that the two charges, involuntary manslaughter and failure to assist a person in danger, relate to what prosecutors believe may have occurred at separate moments. The prosecutor has not disclosed the precise conduct alleged against the suspect, and the circumstances surrounding Mr De Massy’s death remain under investigation.According to People, Mr De Massy’s family had contacted police after being unable to reach him, triggering a search that ultimately led officers to his body in the park.