Madni Ahmed, 20, repeatedly plunged the large blade into the neck and body of Riasat Bi, 86, as she tried to protect her grandson Faizaan Javed
This is the chilling moment a knifeman creeps inside the home of an 86-year-old grandmother before stabbing her to death as she tried to protect her grandson.
Madni Ahmed, 20, repeatedly knifed the 86-year-old Riasat Bi at her home in Small Heath, Birmingham, where he had also stabbed her grandson as he slept.
The killer from Stoke-on-Trent launched the frenzied and motiveless attack after buying knives online using his brother's ID.
He was found guilty of murder, attempted murder, being in possession of an offensive weapon and affray after a trial at Birmingham Crown Court.
He was sentenced to life in prison today, where the judge set a minimum term of 36 years.
Chilling CCTV footage released by West Midlands Police today shows Ahmed attempting to get inside Riasat Bi's home, trying a side door before creeping through the front door.
Ahmed stabbed Riasat Bi's 18-year-old grandson 15 times as he slept in the front room of the family home, before fatally stabbing Mrs Bi and leaving her with more than 25 injuries on the morning of July 12.
He then continued upstairs where he was met by another grandson who ordered him to leave before grabbing a knife in self-defence. Ahmed refused to leave and following a scuffle he received a slash wound to his arm.
The killer fled the house via the attic window, ditching his knife in the roof guttering before jumping into a neighbour's garden.
Ahmed's blood was later found on the fence panels as he stumbled through the garden and into a neighbour's house, grabbing a knife from the kitchen.
He had called a taxi to collect him from The Akers Trust to take him back to a hostel in Newtown.
However, later that evening, Ahmed was arrested at a hospital in Stoke-on-Trent after detectives traced the phone he had been using throughout the day.
The court heard Ahmed's own father had gone to police to say his son could have been involved after hearing about the murder and seeing Whatsapp footage of the killer leaving the scene.
Riasat Bi, 86, pictured, died as she tried to protect her grandson Faizaan Javed from the attack
Speaking after the case, Miss Bi's daughter - who asked not to be named - told how the tragedy had 'devastated' the close-knit family.
She said: 'My mom had three children and six grandchildren - the youngest is only four.
'We have tried to stay strong and positive for the children - we want them to know whatever they are going through we will be there for them.
'I was so very close to my mom - I saw her every day. 'She was so gentle and kind and had no enemies - she was loved by everyone.
'She wasn't just our mom - she was a mom to so many other people.
'She didn't have a bad bone, she loved and cared for everyone she met.'
Detective Inspector Harry Harrison, from Force CID, said: 'This was a pre-meditated attack, with Ahmed intent on killing someone that day by taking a knife to the home of an elderly lady.
'Ahmed claimed that he was looking for someone at the address and when he couldn't find who he was looking for, he attacked Riasat's grandson while he was sleeping, leaving him with life changing injuries. He then went on to carry out a horrifying attack on a defenceless elderly lady.
'This was a horrendous and violent attack and although no sentence will ever compensate for what Ahmed has caused this family, I hope they can find some closure in that justice has been served today.'
A court heard how Ahmed knew Mr Javed's brother, Islam, and that he may have been the intended victim.
He had ordered a haul of knives from the internet using his brother's ID before travelling from his home in Stoke-on-Trent to Birmingham where he checked into a hostel.
He smirked in the dock as he was found guilty of all charges by a jury on Thursday afternoon.
After suffering a slash wound to his arm, Ahmed ditched his blade in the roof guttering before jumping into a neighbour's garden.
His blood was later found on fence panels as he stumbled into another house, grabbing a separate knife from the kitchen.
Police launched a murder investigation after finding Mrs Bi's body inside the house in Birmingham, West Midlands
Following Ahmed's conviction, police said they believed he intended to attack Mr Javed's brother, Islam
After the case, Detective Inspector Harry Harrison, from West Midlands Police, said: 'This was a pre-meditated attack, with Ahmed intent on killing someone that day by taking a knife to the home of an elderly lady.
'Ahmed claimed that he was looking for someone at the address and when he couldn't find who he was looking for, he attacked Riasat's grandson while he was sleeping, leaving him with life changing injuries.
'He then went on to carry out a horrifying attack on a defenceless elderly lady.
'This was a horrendous and violent attack and although no sentence will ever compensate for what Ahmed has caused this family.
'I hope they can find some closure in that justice has been served today.'