The two cases happened in the early hours Cambridge Road and Burnaby Road.
Bournemouth: Student's Jaw Broken In Attack
Police are investigating an attack on a Bournemouth student which left him with a broken jaw.
The 21-year-old was punched in the side of his face between 3.30am and 3.50am on Sunday 12 October 2014 outside the Subway on Post Office Road.
Police say the victim fell to the ground and suffered a broken jaw from the attack after being shouted at by the offender for being a student.
He was initially taken to the Royal Bournemouth Hospital for treatment and then subsequently was admitted to Poole Hospital where he underwent an operation and was admitted for several nights.
The offender is described as a white man, of medium build around five feet five to five feet seven inches with short dark hair wearing a white long sleeved t-shirt.
Detective Constable Caroline Craft, of Bournemouth CID, said:
"This incident caused a very serious injury.
"As it occurred in a busy area of town a number of people may have witnessed what happened.
"I am appealing for anyone who saw the incident, or has any information about the events leading up to it, to contact Dorset Police."
The victim is described as a white male around five feet ten inches, of slim build and was wearing a green checked shirt, blue denim jeans and Vans shoes.
DC Craft continued: "I am particularly interested in speaking with a male that intervened during the incident."
Witnesses and anyone with information should call Dorset Police in confidence on 101.
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.