OAKLAND -- A 20-year-old parolee was charged Thursday with robbing and sexually assaulting three women in the past seven months.
The women were attacked from September to Tuesday. Two of them lived in the same apartment complex near Lake Merritt, authorities said.
If convicted of the 10 felony counts against him, Joshua Collier could face a minimum of 35 years to life in prison, assistant district attorney Norbert Chu said.
Collier, who was paroled from prison the week before the Tuesday attack, is charged with three counts of robbery, three counts of sexual battery, two counts of assault with intent to commit a sex crime as well as one count each of forced oral copulation and forced digital penetration.
The most recent attack happened Tuesday at an apartment complex in the 1400 block of Third Avenue, where authorities said he attacked another woman Sept. 19. The third attack with which he is charged also happened Sept. 19 in the 1800 block of Lakeshore Avenue.
Police said Collier did not know any of the women he is accused of attacking.
Officer Hamann Nguyen said Collier admitted to his involvement in the Tuesday attack and the Lakeshore Avenue attacks.
In the attacks, police said Collier would confront the women, holding either a screwdriver or scissors, then rob them of cellphones or cash and sexually assault or molest them.
Collier was released from prison April 13. He had been arrested for burglary on Sept. 30 and convicted Dec. 26.
He also has a 2008 robbery conviction.
He was arrested Wednesday at a downtown halfway house for parolees after police developed information linking him to the attacks. Police recovered the clothes he wore during the Tuesday attack and a pair of scissors police said he armed himself with.
Police said they do not believe he is responsible for a brutal attack on a woman in Chinatown.