Counter-terrorism police have formally identified Emad al Swealmeen as the person who died in the explosion at Liverpool Women's Hospital.
They say they have also traced a relative and will be speaking to them today.
Al Swealmeen was killed when a suspected improvised explosive device detonated inside a taxi on Remembrance Sunday.
He was the only person who died, while the driver of the car managed to run from the smoking car and was relatively unscathed.
Assistant Chief Constable Russ Jackson of Counter Terrorism Police North West also confirmed that al Swealmeen is believed to have been born in Iraq and most recently lived at Rutland Avenue in Liverpool.
"The scene at the hospital remains in place however the car has been removed and officers continue to conduct fingertip searches," said Mr Jackson.
"It is expected that sections will be released in the coming days, but the scene will not be fully released until at least Sunday.
"The addresses at Rutland Avenue and Sutcliffe Street continue to be searched and significant items have been found at both addresses. Rutland Avenue remains our main focus."
A post-mortem examination has confirmed his cause of death as "injuries sustained from the fire and explosion".
Police said on Wednesday that they believe al Swealmeen began making "relevant purchases" for his attack in April.
They are also investigating "episodes of mental illness" that he's believed to have experienced.