Heartbroken dad speaks of anguish after his son was killed in car concrete block tragedy A GRIEVING father has revealed his anguish after his teenage son was killed when a lump of concrete was thrown at the car he was travelling in. Nassem Galleze and car PANassem died after the horror incident Police have rearrested a 21-year-old man on suspicion of violent disorder and possession of an offensive weapon on Wednesday. He was originally arrested and bailed last week. Student Nassem Galleze, 17, received multiple injuries after the mint green Vauxhall Corsa hit a lamp post on Saturday September 26. Officers are appealing for those who rushed to help the teenager to come forward. Damaged mint green Vauxhall Corsa PA The Vauxhall Corsa hit a lamppost Nassem's dad Hakim said: "I am numb with pain. Every time my phone rings or there's a knock at the door, I pray it is Nassem. "Our beloved Nassem's life has been brutally ended and my family are devastated. "People will have seen what happened and they will have heard things; you might be thinking, 'Do I talk to the police?' "Take a look at the car where my son died and you know there's only one thing to do for Nassem and our family. Please assist the police." The suspects ran off leaving passersby to help The Metropolitan Police said it is believed the vehicle came under attack on the Turnham Estate in Brockley, south-east London. It is thought that the block was hurled as the car made to leave, smashing the windscreen and causing it to crash. The suspects ran off, leaving passers-by to rush to the aid of Nassem and the two friends who had been in the car with him. Detective Chief Inspector Noel McHugh, who is leading the investigation, said: "This arrest further demonstrates the thorough and meticulous work of my officers as they continue to work through the evidence surrounding Nassem's murder. "We will find those responsible for this crime and they will face justice." New Scotland Yard sign in London PA Police are asking the public for information about the incident Six men aged between 19 and 23 were initially arrested in connection with the investigation, and four have since been bailed pending further inquiries. A 22-year-old man has been charged with violent disorder in connection with the death, police said.