ICE confirms second deathpublished at 16:09 BSTBreaking
While we wait for this delayed news conference to start, we can bring you an update from ICE.
Posting on social media, ICE says the Dallas field office has been secured after a gunman fired "indiscriminately at the building and those in the sallyport".
"We can confirm that three individuals were shot and two are deceased.
"The shooter is also deceased by a self-inflicted gunshot wound."
ICE confirms no officers were physically injured.
"This isn’t the first time this location has been targeted; less than a month ago, a man walked in with what he claimed was a bomb," ICE says. "This violence must stop."