In a radio interview Wednesday morning, U.S. Sen. Scott Brown (R-MA) jabbed at Democratic Congressman Edward Markey about his residency in Malden, according to a Boston.com report.

Brown questioned if Markey still lives in Massachusetts anymore and also told WTKK-FM he often sees members of the Bay State congressional delegation on planes trips home but said "I have never seen Ed on the airplane—ever," according to the report. 

Markey spokeswoman Giselle Barry responded in an email to Patch, "Scott Brown has not yet announced that he is running for Senate, but he is already launching false, personal attacks from the sidelines. Ed Markey lives in Malden, and has lived there his entire life. He and his wife own their home in Malden. He is proud to come from and represent the values of the people of Malden. This campaign should be about what matters most to the people of Massachusetts: jobs, education, health care and the environment."

This salvo from Brown could be a preview of a possible showdown with Markey over the Senate seat expected to be vacated by John Kerry if he is confirmed as the next U.S. Secretary of State. Boston.com reports Brown has "hinted" he could run for the seat while Markey said he would run if Kerry's confirmation is successful.