The SAS was brought in to lead raids in Liverpool following Sunday's terror attack at the Women's Hospital.
On Sunday police have raided properties in Sutcliffe Street, Kensington and Rutland Avenue, near Sefton Park, as part of the counter terror investigation into the taxi blast at Liverpool Women’s Hospital.
Rutland Avenue remains the "main focus" of the investigation, with the Royal Logistics Corps Bomb Disposal unit sent back to the street again on Friday.
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According to Mirror Online, Last night a senior source said: “The decision to send in the SAS was made very quickly because of their high level of training.
"The police counter-terror teams are extremely good but special forces are so highly trained that when the doors go in they don’t flinch.
“They are able to make split-second decisions with no hesitation and this saves lives in what may have turned into a high-intensity, very risky situation.”
Counter Terror Police North West confirmed the man believed to have built the Improvised Explosive Device that he carried into a taxi on Sunday has now been formally identified as 32-year-old Emad Al Swealmeen.
Al Swealmeen is connected to both the Rutland Avenue and Sutcliffe Street addresses having lived in Sutcliffe Street for 'some time' and 'recently rented' the Rutland Avenue property.
In an update today, Counter Terror Police North West released more details about the device he used in the attack.
Assistant Chief Constable Russ Jackson said: "Although there is much scientific work to do on the device to determine what made it up, we have learned a great deal over the past five days.
"It was made using homemade explosive and had ball bearings attached to it which would have acted as shrapnel.
"Had it detonated in different circumstances we believe it would have caused significant injury or death.
"We still do not know how or why the device exploded when it did, but we are not discounting it being completely unintentional, and it is a possibility that the movement of the vehicle or its stopping caused the ignition."
