"There is a serious extremism and terrorism problem inside of Pakistan. The Pakistani government understands that," White House Press Secretary Josh Earnest said yesterday.
"The US has certainly been supportive and encouraging of the Pakistani government as they have considered the steps necessary to combat that extremist threat.
"This terrorist attack that we saw in this park over the weekend is grotesque and chilling. But unfortunately, it is not the only effort that we have seen on part of extremists in a large-scale way, to carry out an atrocity against a large group of innocent people, including children," he said.
"So that is an indication that there continues to be a serious problem and the US will continue to support the Pakistani government as they try to confront and combat that extremist element within their own country," Earnest said.
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He said the US condemns in the strongest possible terms this terror attack at a children's park in Lahore on Sunday.
"The other thing is indicative of what we talk about up here quite a bit is that even though this terror attack was targeted at Christians, a religious minority in Pakistan - again, that is in and of itself grotesque, but the fact of the matter is that based on the names that we are seeing now, the majority of the victims were actually Muslims," Earnest said.
"Certainly, the government of Pakistan understands this today, just how critically important that is," Earnest said.
The US and Pakistan have an important counterterrorism relationship. The Obama administration certainly values the kind of cooperation that it has received from them, he said.
At least 72 people including 29 children were killed in the Taliban suicide bombing at a park during Easter celebration in Lahore on Sunday.