Senator Chris Van Hollen @ChrisVanHollen
We are closely monitoring the reports of a shooting at Great Mills High School in St. Mary’s County. For those in t… https://t.co/7PgvF2Kad4 — PolitiTweet.org
MD State Police @MDSP
From the St. Mary's County Sheriff's Office: There has been an incident at Great Mills High School. Parents please… https://t.co/jjxa6aW3gq