Chicago police announced today that the department has seized about $5.7 million of cocaine and marijuana from a Southwest Side man who authorities say likely is connected to drug trafficking organizations in Mexico.

Francisco Gonzalez-Nieto, 22, of the 7700 block of South Kilbourn Avenue, was arrested Friday at his home. Police found more than $87,000 in cash and more than 4,000 grams of cocaine and about 1,900 pounds of marijuana packaged in cardboard boxes stacked in a bedroom, said Nick Roti, chief of the organized crime division.

Gonzalez-Nieto is being held at the Cook County Jail on a $25,000 cash bond.

Led by a tip, police were investigating Gonzalez-Nieto for about two weeks. He likely was a middle man working with a Mexican drug-trafficking groiup, Roti said. "It's not the biggest (drug seizure) we've ever had, but it's substantial," he said.

Gonzalez-Nieto is not a U.S. citizen, and police did not know how long he has been in the United States.

Drug traffickers usually transport a load of drugs as large as the stash found in Gonzalez-Nieto's home in a semi-truck or a moving van, Roti said.

"They typically don't keep drugs in one place for a long period of time," Roti said. "It was getting ready to be moved out onto the street."

In other developments:

--Police continue to ask the public for help to solve the murder of Chicago police Officer Michael Bailey. He was shot July 18 in front of his Park Manor home. Nearly $130,000 in reward money is available.

--Police said Sunday they are looking for a suspect 18 to 22 years old in connection with the slaying of Robert Freeman Jr., 13. He was shot more than a dozen times last week in the 11500 block of South Perry Avenue in the West Pullman neighborhood. Police Deputy Superintendent Steve Peterson would not say what the relationship is between the suspect and Robert. The boy's family has said they think the slaying was a case of mistaken identity, but Peterson said police don't yet know the motive.