Jericho was killed by hunters operating illegally there in Zimbabwe.
Jericho was considered to be caring for and defending Cecil's cubs, but the survivability of those cubs wasn't immediately clear in the aftermath of Jericho's death.
Some of the cubs may have been Jericho's, said David Macdonald, director of Oxford's Wildlife Conservation Research Unit, who has been studying Cecil.
http://edition.cnn.com/2015/08/01/world/cecil-the-lion-brother-jericho-illegally-killed/
Hashtag
https://twitter.com/hashtag/Jericho?src=tren
EDIT: Some say Jericho is still alive and this story has not been corroborated.
Apparently the news of Jericho's murder were spread by a Zimbabwean conservation organization which were then spread by Western news and spread like fire in Twitter.
"He looks alive and well to me as far as I can tell," said Brent Stapelkamp, field researcher for the Hwange Lion Research Project which is monitoring the lion with a GPS tag.
http://www.reuters.com/article/2015/08/01/us-zimbabwe-wildlife-lion-jericho-idUSKCN0Q63CQ20150801
Nintendo is selling their IPs to Microsoft and this is true because:
http://gamrconnect.vgchartz.com/thread.php?id=221391&page=1