A construction worker who stabbed a young Saudi student to death in an unprovoked attack in Cambridge, England, has been jailed for more than 22 years, the Daily Mail reports.Chas Corrigan, 22, was jailed for life with a minimum of 22-and-a-half years after being convicted of murdering 20-year-old Mohammed Algassim during a violent confrontation near the city center on August 1 last year.Algasim was attending an English language program in Cambridge and was spending his third summer in the city. He died after being hit on the neck with a large kitchen knife.Sentencing, Justice Dexter Dias Casey described the attack as an act of “senseless violence” fueled by alcohol, cocaine and anger.The judge said, “Probably no one will ever understand why Chas Corrigan did what he did.”He added, “It was virtually senseless violence. It was fueled by alcohol and cocaine and anger.” It was a lethal combination. Mohammed Algasim was an innocent member of the public. Most of his life was ahead of him. “That was taken away from him and it was taken away from his family.”Corrigan approached Algasim while he was sitting outside student housing with friends. The pair exchanged words and Corrigan initially walked away. However, after hearing another comment, which also included the word “center”, he turned back and confronted the student.Corrigan became aggressive, repeatedly demanding, “What did you say? What did you say?”As Algasim stood up with the mobile phone, Corrigan stabbed him in the neck before fleeing the scene.CCTV footage shown during the trial captured the moments after the attack, with the injured student running away in panic while Corrigan walked away before eventually running away.Friends attempted to save Algasim by following the 999 operator’s instructions and applying pressure to the wound. However, he collapsed and died the next morning.The post-mortem examination found that he had suffered a wound 4.5 inches deep, which had severed a major artery in his neck.Corrigan denied murder and claimed he acted in self-defense. She told jurors that she thought Algasim was going to “hurt me” and insisted that she did not realize he had attacked her with a knife.He said during the trial, “I didn’t think I’d hit him. I just thought I’d swing him. He was one step away and I thought I’d swing him between us.”He also claimed that he kept the knife for protection as he had been attacked before.However, prosecutors argued that Algasim posed no threat.Prosecutor Nicholas Hearn told the court, “Mr Algasim posed no threat to anyone. The defendant was the aggressor here.”It took jurors just two hours to convict Corrigan in March.Corrigan had drank large amounts of alcohol and taken cocaine before the attack. He admitted to drinking several alcoholic beverages and using cocaine twice that evening.Mohammed’s father Youssef Algassim described the devastating loss of his son.He said, “I prepared him for life, not death.”“Instead of looking at his accomplishments, I was faced with the unbearable reality of receiving his lifeless body.”He said Mohammed’s mother was devastated by the tragedy.“She is living as if she has no soul, holding on only to the memories of her laughter, her presence in our home, and her voice.”After the murder, Corrigan threw away the knife and his high-visibility jacket as he fled. His father, Peter Corrigan, later admitted assisting a criminal after helping to recover and dispose of evidence linked to the crime.The 51-year-old was sentenced to 24 months in prison.