**Three people have been shot and killed at the University of Alabama, a university spokesman says.**A suspect has been apprehended after the violence on the university campus in the city of Huntsville, the spokesman, Ray Garner said.
One other person was injured in the incident, he added.
US educational sites have seen numerous fatal shooting attacks in recent decades, the most serious occurring at Virginia Tech University in 2007.
“We have three confirmed people who are dead, one injured,” said Mr Garner.
"The police have secured the building. " he added.
Police were “sweeping the building to both look to see if there are other victims as well as to get evidence,” Mr Garner said.
He said that a woman was in custody but he could not identify her or any of the victims.
A local television station, WAFF, quoting a police official, said the shooter was believed to be a female staff member.