A 22-year-old man has appeared before magistrates in Lincoln charged with making malicious comments on Facebook following the Woolwich attack.
Benjamin Flatters, from Lincoln, was remanded in custody to appear before Skegness Magistrates' Court on May 29.
More top news
Initial indications were that the test on Friday was unsuccessful, according the a US government source who spoke to Reuters.
Southerly winds will bring warmer temperatures this weekend. Rain arriving on Sunday.
A cancer-stricken young father who may have just weeks to live says he refuses to "roll over and die" - and has launched an appeal for help.