BALTIMORE - Two Baltimore law firms have filed a lawsuit against Facebook, arguing that the site has violated privacy laws.

The Daily Record of Baltimore reports the law offices of William Murphy Jr. and Peter Angelos filed their lawsuit in U.S. District Court in San Jose, Calif. The lawsuit, which also involves a California firm, claims Facebook has used online tracking technology to monitor users even when they are not on Facebook's site.

The two named plaintiffs in the case are Laura Maguire of Charlotte, N.C., and Baltimore resident Christopher Simon.

California-based Facebook said in a statement Wednesday that it believes the case is without merit.

Lawsuits by users of large Internet services over privacy and other grievances are fairly common and typically seek class-action status.