NEW YORK, July 28 (Xinhua) -- A gunman killed four people and injured six others on early Monday evening before shooting himself dead inside an office building in Manhattan, New York City.

一名枪手在曼哈顿一栋大楼内开枪打死四人，包括一名警察。私募股权投资公司 黑石集团 (Blackstone)的中城办公室、NFL总部以及其他一些公司办公室都设在该大楼内。

LOS ANGELES, July 28 (Xinhua) -- At least two people were killed and several others injured in a shooting Monday morning outside a casino in Reno city, the U.S. state of Nevada, local media reported.