Police search the premises of Louis Lingg, …

Years: 1886 - 1886
May

Police search the premises of Louis Lingg, where they find a number of bombs and bomb-making materials on May 7.

Lingg's landlord William Seliger is also arrested but cooperates with police and identifies Lingg as a bomb maker and is not charged.

An associate of Spies, Balthazar Rau, suspected as the bomber, is traced to Omaha.

Brought back to Chicago, Rau offers to cooperate with police.

He alleges that the defendants had experimented with dynamite bombs and accuses them of having published what he said was a code word, "Ruhe" ("peace"), in the Arbeiter-Zeitung as a call to arms at Haymarket Square.

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