CCTV appeal following robbery in Aigburth

We are circulating images of two males who detectives think may information following a robbery in July in Aigburth.
 
At around 6.35pm on Sunday 3 July, the victim, an 11-year-old boy, was cycling along Aigburth Road close to the Territorial Army Centre. He was grabbed by two males who are believed to have followed him from McDonald's. One of the males made threats and implied they had a knife, although no knife was seen. The victim was then thrown off the bike which was stolen.
 
The bike is described as a Bossnut mountain/cross bike with red writing on the underside of the frame (pictured).
 
Detective Inspector Katie Coote said: "Extensive enquiries have been made with officers and through local schools to locate these young males, but without success. We think they could have information to help us, so if you know who they are please come forward.
 
"To target anyone and forcibly steal property is a serious matter, but to follow and rob such a young victim is shocking, and we'll take action on any information provided, including anyone who may have seen or been offered the bike since."
 
Please contact @MerPolCC or Crimestoppers anonymously on 0800 555 111 with reference 22000469950.