The commander of the Boston Police Area C-11 issued a warning to Dorchester Ave. merchants today following a flurry of commercial break-ins along the avenue in the last ten days. In a letter, Captain Richard Sexton says that there have been a series of "commercial burglaries along Dorchester Ave from Fields Corner to Lower Mills during the overnight hours."

"The common method of entry has been through the rear door via force," Sexton wrote. "One of the burglaries involved the removal of the hinge pins of the rear door and the cutting of alarm wires. This particular method of entry has been occurring in various parts of the city over the past few months including Dorchester."

Sexton added that the last incident of this particular nature in C-11 occurred in mid March.

Sexton urged merchants and property owners to make their doors as "secure as possible."

He added: "All Officers on the overnight shift are aware of this activity and extra attention is being paid to the commercial buildings in the area."