KANSAS CITY, Mo. — The number of "suspicious" letters containing white powder delivered to Kansas legislators and officials more than tripled from Friday afternoon to Sunday evening, the Kansas Bureau of Investigation said.
The number of suspicious letters increased from more than 30 reported letters by 4 p.m. Friday, to approximately 100 reported letters as of Sunday evening.
Law enforcement were able to collect a small sample of the letters containing powder that were sent to a laboratory that specializes in testing biological samples, according to the KBI.
Preliminary tests showed Sunday that the substance is presumably negative for common biological agents of concern.
The KBI says that additional testing will be conducted on the sample letters, as well as on additional letters that have been collected, in an effort to determine the components of the substance.
Multiple organizations, including the FBI, Kansas National Guard, the Kansas Department of Health and Environment, Kansas Highway Patrol and local police and fire departments, as well as sheriff's offices, responded to reports of the letters.
Kansas Attorney General Kris Kobach was one of the law enforcement officials to receive a letter containing the white powder.
No injuries have been reported from the powder, but KBI said in a statement to "remain vigilant" when handling mail.
Any similar incidents can be reported to the KBI at 1-800-KSCRIME.
The KBI will be providing updates to the case on Facebook.
