Police clear 6 D.C. schools that received bomb threats: "No hazardous material found"

Police investigated bomb threats at six schools in Washington, D.C, on Wednesday. They later said the schools were cleared and "no hazardous material" was found.

The schools were: Dunbar High School, Theodore Roosevelt High School, Ron Brown High School, KIPP DC College Preparatory, IDEA Public Charter School and Seed Public Charter School, according to the Metropolitan Police Department of the District of Columbia. At least three of the schools — Dunbar, Roosevelt and Ron Brown — were evacuated.

This is the second day Dunbar dealt with a threat. Second Gentleman Doug Emhoff, the husband of Vice President Kamala Harris, was rushed out of an event at the high school on Tuesday over a bomb threat. Students and teachers were evacuated before the school was rendered safe and students were allowed to re-enter.

On Thursday, the Metropolitan Police Department investigated additional threats made at H.D. Woodson High School, McKinley Tech High School, IDEA Public Charter School, Cesar Chavez Public Charter School and Cardozo Education Campus. 

Each school was later cleared with no hazardous material found, the department said. 

Police arrested two 16-year-olds from Washington D.C. in connection to the bomb threats made on Wednesday, officials announced Thursday. One teen was charged in connection with "multiple" threats, and the other was charged in connection with the threat at a single school.