Fort Worth, dropped by FBI headquarters Thursday afternoon seeking more information about the deadly shooting at an immigration enforcement office in Dallas. They left empty-handed, telling reporters they are worried over lacking details about the shooting,

Joseph Rothrock, special agent in charge of the Dallas FBI field office, described the "significant, high-degree of pre-attack planning" that preceded the deadly shooting. Rothrock said Jahn searched for information about the ICE facility and how to track the location of ICE agents.

As a motive remains under investigation in the fatal sniper-type shooting at a Dallas Immigration and Customs Enforcement (ICE) field office this week, law enforcement experts said the incident is part of a frightening trend of rifle-wielding shooters targeting politicians, police and others from long distances.

Speakers at the event said they had little information about the victims, but urged for more transparency from law enforcement.

Miguel Ángel García Medina, a house painter who has been in the United States for two decades, remains hospitalized and in very serious condition

A shooting at the Dallas Immigration and Customs Enforcement field office on Wednesday left one detainee dead and two others wounded, officials said. The gunman, who fired from an adjacent rooftop, died of a self-inflicted gunshot wound.

Late night host Jimmy Kimmel’s ABC show returned to the air Tuesday night, prompting President Donald Trump to slam “ABC Fake News” and threaten legal action against the Disney-owned network.