In Massachusetts, the Winchester public library will be closed “at least until Tuesday” according to the library’s director.
This follows a murder in the public reading room on Saturday.
Jeffrey Yao, 23, took out a 10 inch hunting knife and stabbed a woman bent over her book, in the head, chest and torso.
Neighbours reported that Yao had started to behave oddly in the months prior to the killing and had apparently given up washing.
He has been charged with murder.