The two cases happened in the early hours Cambridge Road and Burnaby Road.
Cyclist Attacked In Kinson
Detectives in Bournemouth are appealing for witnesses and anyone with information to come forward after a man was seriously assaulted in the Kinson Common area.
At around 3.30am on Sunday, 25 September 2011, an 18-year-old man was assaulted as he cycled along Kinson Road.
The victim, of Bournemouth, sustained serious injuries to his neck and back, as well as a cut to his head. He continues to receive treatment at hospital.
Detective Constable Nena Stewart, of Bournemouth CID, said:
"It is not clear exactly how the man came to sustain his dreadful injuries.
"He is likely to require treatment for quite some time and it is vital that anyone who can shed any light on this incident contacts Dorset Police urgently.
"I would like to speak with anyone who saw any suspicious activity in the Kinson Common area on Sunday and anyone who recalls seeing a cyclist along Kinson Road during the early hours of the morning.
"All calls will be treated in the strictest of confidence."
No description of the offender is available.
Witnesses and anyone with information should call Dorset Police in confidence on 101 quoting incident number 25:197. Alternatively, call the free and anonymous Crimestoppers line on 0800 555 111 where mobile phone tariffs may apply.
Lewis Hine - who has a brain tumour - posted an inspirational film about his life, on his 16th birthday last week.
One of the men's targets was Ernest Jones in Portsmouth, taking £57,000 worth of watches.
Detectives Searching For Dash Cam Footage Around Gilpin Close.
Recently Played Tracks
Now playing: Non-stop hit music
Deposit £10 to get a £40 Welcome Bonus - That's £50 to play bingo, slots and more!*
Over 50 tracks to make you feel-good. New album out now...
Find your local four day weather report here.
What's happening on the roads where you are?
Make Heart the soundtrack to your day and you could be a winner with great prizes up for grabs throughout the day.
Find out more about some of the companies advertising on Heart.
Get some great ideas on how to advertise your business on radio, online and on mobile.