THE killer of MP Sir David Amess waited calmly at a constituency surgery in a church before launching his knife attack — then sat down and waited for cops.
Two female staff watched in horror as the maniac walked up to the 69-year-old Tory then pulled out a blade.
He is said to have stabbed the married dad of five up to 17 times — without saying a word — at 12.05pm.
The two women ran out and tried to raise the alarm.
Police who raced to the scene recovered a knife before bundling the suspect, a 25-year-old British national of Somali origin, into the back of a van and driving him away.
Local Anthony Finch said he saw the suspect being led out.
“He was wearing jeans and a white top and was completely quiet,” he said.
“He was in his mid-20s and appeared to be getting into the police car willingly. He was compliant.”