The Boston Globe and New York Daily News quoted unnamed sources saying they believed the same suspect was behind two other attacks on women in hotels this month.

The first victim was a 29-year-old woman who advertised on Craigslist as an exotic dancer and was robbed of her credit card and 800 dollars cash on April 10.

The second, a 26-year-old woman who offered visiting massage services, was shot dead.

The third, just four days ago, was a 26-year-old prostitute from Las Vegas who was robbed at gunpoint at a hotel south of Boston, the Daily News said.

Police released surveillance photographs earlier Monday of the suspect. US media has dubbed him the "Craigslist killer."

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