Frankston Sexual Offences & Child Abuse Investigation Team detectives have arrested and charged a male in relation to four alleged separate sexual assault incidents, across the Mornington Peninsula, during January and February.
The first incident occurred on The Boulevard in Somers on 22 January about 10.30am.
The second incident occurred on Tasman Road in Somers on 31 January about 6.10pm.
The third incident occurred on Peterson Street in Crib Point on 1 February about 5pm.
The fourth incident occurred on Sandy Point Road in Balnarring on 13 February about 5pm.
In each of the incidents it is alleged the male approached the victim and struck them on the backside, before fleeing the scene on his bike.
A 17-year-old male from Crib Point has been charged with five counts of sexual assault.
He has been bailed to appear in a children's on 14 April.