(RICHFIELD, Minn.) -- One student is dead and another is critically injured after being shot on the sidewalk outside of a school Tuesday in Richfield, Minnesota, according to police.
Police said the incident took place around noon outside the South Education Center, but the suspects fled the scene, Jay Henthorne, chief of Richfield Police, told reporters.
The cause of the shooting is still under investigation.
The U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives is on the scene and assisting with the investigation.
Erica Barlow, who is the principal at nearby Richfield Middle School, sent a letter to parents informing them of the incident.
"The officers had weapons drawn and were in bullet-proof vests. It is unlikely that many students witnessed the event, as they were in class at the time," she wrote. "However, it is important that you are aware of the incident in the event that your child hears about it, as some children may be deeply impacted by this type of news."
This is a developing story. Please check back for updates.