FBI investigates letters with ‘unknown substance’ sent to US election officials

Election officers in Louisiana and Oklahoma receive a powdery substance, prompting evacuationsThe FBI and the US Postal Inspection Service are investigating letters sent to state officials and election offices across the country containing an “unknown substance”.Just weeks before November’s US midterm elections, election officers in Louisiana and Oklahoma received envelopes containing a powdery substance, leading to evacuations. A similar package containing white powder was also...