Authorities say a sweep by officers from 10 law enforcement agencies rounded up 29 people on drug and firearms charges yesterday in Rutland.

The effort, dubbed "Operation Marble Valley'' began in February and culminated when 50 officers gathered outside Rutland, divided themselves into arrest teams, prisoner transport teams and other teams and moved in to make the arrests.

In all, 12 people were arrested on federal warrants, with charges including large-scale cocaine dealing and firearms violations; 17 were picked up on state drug charges and eight other people were still being sought, authorities said.

The operation came in the wake of several high-profile drug crimes in recent months here, including a killing that police said was drug related.