Stuart Hall, 53, son of Ethel Hall, from Calverley, said he welcomed the sentence and was "grateful" to the jury.

Norris, 32, has been jailed for life with a minimum tariff of 30 years for murdering four pensioners and attempting to murder another.

Mr Hall said: "We hope Colin Norris never leaves prison and is never in a situation where he can harm anyone else again.

"We are hoping to have discussions with the trust and would like to see an independent inquiry into how this could have happened.

"We are relieved this case is over and my mother can finally rest in
peace."

"Ethel was not unwell and if it had not been for this callous killer she could still be with us today, enjoying her life with her husband and family.

"I do not understand why Colin Norris pretended to be a caring nurse when he was really a cold-blooded killer who preyed on the vulnerable and those he should have been caring for.

"They were looking for his help in recovering from their simple hip operations. They did not deserve to die at his hands."