A 27-year-old man charged with the murder of Luton police officer Jon Henry has been remanded in custody.
Jon Henry leaves a wife and daughter
Tennyson Obih, of Luton, was also charged with the attempted murder of two window cleaners - Steven Chamberlain and David Knight.
Pc Henry, 36, was stabbed after responding to reports of an assault in Luton's George Street early on Monday.
Mr Obih appeared before Luton magistrates where he was remanded to appear at Luton Crown Court on 26 June.
Despite his police-issue body armour Pc Henry suffered stab wounds and died later at the Luton and Dunstable Hospital.
Mr Chamberlain was stabbed in the back and is in a serious but stable condition in hospital.
Mr Knight suffered a minor injury to his arm.
Pc Henry, whose daughter Maggie will be one at the end of the month, had been on duty for less than 30 minutes before the incident.
On Wednesday afternoon the Prime Minister paid tribute to Pc Henry.
At Prime Minister's Questions Mr Blair offered condolences to Pc Henry's family and friends.
"His death highlights the dangers that our police officers face every day in their task of protecting the public," he said.
Tory leader David Cameron also expressed his party's "heartfelt condolences and sympathy" for Pc Henry's family and friends.