from nationaljournal.com:

Two developments late Monday may complicate what had been a calm and peaceful security situation for the convention. The local U.S. attorney plans a 4 p.m. press conference Tuesday to answer questions about the arrest of three men on drug and weapons charges in a possible plot to assassinate Barack Obama. Meanwhile, about 100 protesters were subdued by police with pepper spray and non-lethal bullets about 1.5 miles from the Pepsi Center, then arrested for blocking streets and related charges. Federal officials say that neither Obama nor convention-goers were ever in danger from the alleged plot, and police say they remain confident that protesters will not be able to disrupt the convention.