CLEVELAND -- An investigation that's been underway since 2010 has resulted in a 107-count federal indictment involving 31 individuals related to heroin and cocaine trafficking in Northeast Ohio.

The indictments were announced Thursday afternoon at a news conference at the U.S. Attorney's office.

Twenty-eight of the 31 have been arrested.

Authorities are still seeking Ruben Bell, 27, Latoya Johnson, 30, and James McClain.

Twenty-nine of those indicted are accused of trafficking the narcotics, and two others are accused of money laundering related to the drug sales.

Most of the people involved are from Cleveland, but some are from Akron, Toledo, Chicago and Texas, according to authorities.

Authorities discovered drug "stash houses" in the areas of East 71st Street, East 58 Street, Superior Avenue and Linwood Avenue.

During the course of the investigation, authorities recovered 15 weapons, seven kilos of heroin, one kilo of cocaine and $750,000 in cash.

Anyone with information on the whereabouts of the three individuals who remain at large is asked to contact the FBI at (216) 522-1400.