State and federal authorities were investigating a suspicious substance discovered Monday afternoon in the mail sent to a fourth floor office at the Capitol — the second time in a week this has happened.

An emergency environmental responder leaves a Capitol office after investigating a suspicious substance found in mail
Malloy spokesman Andrew Doba described the material as “a green, granular substance” that is like sand, but clumpy. The mail had a return address, he said.
Capitol police said the material was sent to the state crime lab for testing. No timetable for results was given late Monday afternoon, and further details about the mail were not immediately available.
Authorities discovered a suspicious package in the mailroom of the adjoining Legislative Office Building Feb. 19. Police had received a telephone threat that indicated the mailing contained anthrax powder, but subsequent testing revealed no toxins.