The FBI decided to take another look into the 1982 case in which seven people who were murdered by swallowing tainted Tylenol capsules. Federal agents have searched the home of on of the lead suspects.

The FBI agents searched the condominium of James W. Lewis, who spent about 12 years in jail for attempting to extort $1 million from the company that produced the painkiller swallowed by the victims.

The case in which seven people died in the Chicago area 26 years ago remained unsolved and nobody was even charged.

However, the FBI office in Chicago said it is collaborating with Illinois State Police and local departments to review all the evidence connected with the case. The FBI said the review is motivated by "advances in forensic technology" and to tips arrived after the 25th anniversary of the deaths in 2007.

FBI agents were seen removing boxes and a PC from the condominium complex on Gore Street in Cambridge where the suspect owns a condo. Mr. Lewis was convicted after admitted sending a letter to Johnson & Johnson, which manufactures Tylenol, in which he demanded $1 million “to stop the killing.” Although he was the lead suspect at one time, he was never charged.

The federal agents searched several other places including at least one storage facility in connection with the ongoing investigation, said spokeswoman Gail Marcinkiewicz.

The case of the seven people murdered in the Chicago area horrified the entire country and determined authorities to change the way drugs are packaged.