LOS ANGELES — The embattled mayor of San Diego has stepped away from city politics to attend a two-week behavior treatment program, but his absence from City Hall has not stemmed a tide of sexual harassment allegations against him.

New accusations this week may be the most damaging yet for the mayor, Bob Filner, a former chairman of the House Committee on Veterans’ Affairs, because they come from military veterans, a constituency to which he has devoted much of his time in public service.

This week, several female veterans, including a wounded Marine and two women who were victims of sexual assault while they served in the military, claimed that Mr. Filner tried to use his position in public office to gain dates or intimate contact.

On Wednesday, two veterans said publicly that they received unwanted sexual advances from Mr. Filner after he met them last year at an event for veterans who were victims of sexual assault in the military, when he was a congressman running for mayor.