 Janice Collins is a leader in the UK anti-gun campaign |
The family of a murdered teenager held a candlelight vigil for him on Saturday - three years after he was shot dead. Brendon Lawrence, 16, died in the St Ann's area of Nottingham as he stepped out of a car.
Detectives have made more than 20 arrests, but no-one has been charged with his murder.
His mother, Janice Collins, said about 50 people attended the vigil at the murder scene in Watkin Street.
She has made numerous appeals for help in tracing his killers.
 | We have been given fresh information in the last few weeks, which we are now investigating |
A �10,000 reward is being offered for information leading to an arrest in the case.
Nottinghamshire Police said they remained determined to catch Brendon's killers, who left the murder scene in a red Ford Fiesta.
That car was later found abandoned and burnt out in the Westville Gardens area of St Ann's, with several items of clothing police believe were worn by the killers inside.
Det Supt Kevin Flint, who is the leading the investigation, said: "We have been given fresh information in the last few weeks, which we are now investigating."
Mrs Collins, who had talks with Prime Minister Tony Blair and former Home Secretary David Blunkett about her son's death, said she still hopes her son's killers will be caught.