(CNN) -- A former campaign staffer for San Diego Mayor Bob Filner became the second woman to publicly accuse him of sexual harassment, saying Tuesday that the then-congressman patted her "posterior" while at a fundraising event. Laura Fink, who now runs a political consulting firm, told KPBS-TV that it happened in 2005 when she was working as Filner's deputy campaign manager. Fink said she didn't go public with the incident at the time because she was trying to build her political career. But she said she now feels emboldened to tell her story after Filner's former spokeswoman, Irene McCormack Jackson, sued him for sexual harassment Monday.
@highlight
Laura Fink says incident happened while she was a campaign staffer in 2005
@highlight
She says then-congressman Bob Filner patted her "posterior"
@highlight
Filner's former spokeswoman is suing him for sexual harassment
@highlight
He has been battling such allegations for several weeks
"I am embarrassed to admit that I have failed to fully respect the women who work for me and with me, and that at times I have intimidated them," @placeholder said in a statement earlier this month.