Ann Maguire stabbing: Police presence at Corpus Christi school
29 April 2014 Last updated at 08:30 BST
Uniformed police are outside a school where a teacher was killed in front of a classroom of pupils.
Ann Maguire, 61, of Moortown was stabbed at Corpus Christi Catholic College in Leeds on Monday.
A 15-year-old boy is being questioned by detectives.
Phil Bodmer reports.