Also, investigators seek a motive in killings at Brown and M.I.T. Here’s the latest at the end of Friday.

Also, authorities search for a person of interest in the Brown shooting. Here’s the latest at the end of Thursday.

© Haiyun Jiang/The New York Times

Also, New York will allow the terminally ill to end their lives. Here’s the latest at the end of Wednesday.

© Tony Luong for The New York Times