BOSTON (CBS) – Boston Police say they are stepping up security around the city’s public schools after a number of rambling letters were sent to several different schools in the city.
An official tells WBZ, letters were sent to nearly a dozen schools including, Charlestown High, Dorchester Academy and O’Bryant School of Math and Science.
Investigators did not indicate specifically what the letters included, but they say the letters “contain some threatening and disturbing content.”
Investigators say the letters are rambling and talk about weapons of mass destruction. Al-Qaeda and the FBI were also mentioned in the letters.
Police say the letters all appear to be similar and are all postmarked from Texas.
“We do not know of any credible threat to our schools,” Boston police said in a release about the letters.
Despite the lack of credible threat, the department says there will be an increased security presence in and around schools in the city.
Boston Public Schools contacted all families through an automated call on Thursday.