Federal investigators are looking into the possibility that the bombing of a synagogue in Chattanooga, Tenn. last Friday is somehow related to the bombing four days earlier of a Jewish lobbyist's home in Rockville.

Charles Stanfill, who is heading the investigation for the Bureau of Alcohol, Tobacco & Firearms into the bombing of Morris Amitay's Rockville, Residence July 25, said federal investigators here are communicating by phone with agents in Tennessee to determine if the two incidents are linked.

"At this stage, we're not discounting the possibility the two bombings are linked nor are we saying there is a link," said Dick Garner, a federal investigator Chattanooga.

The apparent similarities, Stanfill said, are that electric cord was used to detonate the explosive in both instances and the object of both bombings were Jewish. Stanfill speculated that the explosive used in the Tennessee blast was dynamite, as it was in the Rockville bombing.

Morris Amitay heads the American Israel Public Affairs Committee, the only registered zionist lobbying group. HIs house at 4732 Sunflower Dr. in the Flower Valley subdivision of Rockville was bombed at about 3:30 a.m. while he and his wife and three children were asleep in upstairs bedrooms. They were unharmed.

The blast at the Beth Sholom Synagogue in Chattanooga occurred around 9 p.m. after a Friday service had concluded, according to federal investigators. No one was injured. The bomb caused $75,000 in damage to the synagogue, which reportedly has a mostly elderly congregation.