Details are now appearing. See:
Powerful 6.7 magnitude aftershock rattles Nepal as aid arrives in region
April 26, 2015
·FoxNews.com
A powerful magnitude 6.7 aftershock has shaken the Kathmandu region of Nepal, a day after a massive earthquake crippled the region sending people yelling and running for open ground.
The U.S. Geological Survey said the aftershock Sunday registered at a shallow depth of six miles.
http://www.foxnews.com/world/2015/04/26/aid-starts-to-arrive-in-nepal-as-quake-kills-nearly-2000/
Right on a plate boundary. Prayers for all.