Sussex Police said: "The 36-year-old man, from London, was arrested on suspicion of murder at an address in Crawley in the early hours of Wednesday morning (February 20). "A 36-year-old woman from Crawley was also arrested on suspicion of assisting an offender." Both remained in custody on Wednesday at 1.30pm, along with a 54-year-old man from Brighton who was arrested on Monday afternoon, police said. A 26-year-old man from Brighton, who was arrested on Sunday on suspicion of murder, has been released without charge. Abdul Deghayes, 22, died in hospital on Sunday after he was found stabbed in the passenger seat of a car in Elm Grove in the city on Saturday night. Chief Inspector Andy Bennett said: "The investigation is still very active and developing and we are still appealing for anyone with information about the incident or the circumstances leading up to it to report online or call 101 quoting Operation Login." Related stories: Murder probe as brother of Brighton teens killed in Syria dies after stabbingBrighton murder: Second man arrested in connection with fatal stabbingFlowers left in memory of murdered Brighton man Abdul Deghayes