Birkenhead Park. Picture: Google Maps / Streetview A MAN was beaten around the head with a bike seat post during a robbery in Birkenhead Park last night. Around 5.35pm, it was reported that the victim, a man in his 40s, was attacked by a group of males as he cycled into the Park via Hoylake Road. His pedal bike was also stolen. Officers attended the scene, and after a short pursuit into Flaybrick Cemetery a 15-year-old male from Bidston was arrested on suspicion of assault. The victim's bike was also recovered. The suspect was taken to a police station for questioning and has been released under investigation.