State and local police are looking for "a bald African-American male in his 30s with a muscular build" in the latest of a string of unsolved attacks on women, this one shortly after midnight near the Mass. Ave. footbridge.

Wanted for three rapes.

The woman called police on a Good Samaritan's phone, according to the Suffolk County District Attorney's office, which adds the woman was not sexually assaulted. Her attacker wore a black tank top and black sweatpants.

Since the summer of 2006, three women have reported being robbed and raped along the Esplanade or in Moakley Park by a bald black man, 5'8" to 5'10" with a medium to large build.

Officials say they are still investigating whether this morning's attack - details of which they are withholding to avoid jeopardizing the investigation - is by the same individual.

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