​what we know

​​A shooter opened fire at Santa Fe High School in Santa Fe, Texas, at approximately 7:45 a.m. Friday morning.

Ten people were killed and 10 were injured in the shooting.

Police have a suspect in custody. He has been identified as Dimitrios Pagourtzis, 17.

The shooter was armed with a shotgun and a .38 revolver.

Explosive devices were found in the high school and the surrounding community. Local authorities are urging community members to report "suspicious packages" by calling 911.

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Death toll rises to 10, Texas Governor Abbott Confirms

UPDATE 3:25 p.m. ET, May 18, 2018

Ten people were killed and ten more injured in the Santa Fe High School shooting on Friday, Texas Governor Greg Abbott confirmed in a press conference this afternoon.

"We grieve for the victims who lost their lives at Santa Fe High School and we pray for the families that are suffering and the families that will continue to suffer in the days to come," Abbott said.

He also confirmed more information about the suspected shooter, Dimitrios Pagourtzis, including that authorities have discovered evidence on his computer, phone, and in a notebook that he intended to carry out a shooting and commit suicide. Before he was able to commit suicide, however, Pagourtzis allegedly turned himself over to the authorities and was taken into custody.

To carry out the shooting, the gunman was armed with a shotgun and a .38 revolver. Abbott said the shooter took these firearms from his father, who had obtained them legally. There was no evidence at the time of the press conference that the father knew his son had taken the weapons.

Abbott also said that authorities were interviewing two people of interest, but declined to release any additional identifying information about them.

While those interviews are ongoing, authorities are continuing to sweep Santa Fe High School for explosive devices and are searching two residences and a vehicle associated with the gunman. Law enforcement is proceeding with caution, Abbott said, due to the risk of discovering additional explosive devices that could pose harm to investigators.

In addition to conducting a full investigation into the shooting--with the goal of prosecuting the gunman--Abbott said he will be working with the Texas legislature and other state officials to set up roundtable discussions. They will discuss "swift solutions to prevent tragedies like this from ever happening again," he explained.

Future actions could include taking legal action to keep guns out of the hands of those that pose an immediate danger, enhancing background checks, increasing resources for school security, and funding initiatives to address mental illness and gun violence.

Abbott said his goal is to work together to create laws that "protect Second Amendment rights but ensure that our communities, and our schools, are safer."Suspect in custody identified

UPDATE 2:55 p.m. ET, May 18, 2018

An official briefed on the investigationtold USA TODAYthat the suspect in custody for the Santa Fe High School shooting is 17-year-old Dimitrios Pagourtzis.

"The suspect was armed with at least one rifle or shotgun, but the first official cautioned that there could be other weapons related to the incident, though not yet recovered," according to USA TODAY.

Authorities have detained another individual as they continue to investigate the shooting. However, more information about who that individual is has not been confirmed.explosive devices found near high school, surrounding area

UPDATE 1:00 p.m. ET, May 18, 2018

The Santa Fe Independent School District announced that explosive devices were found in Santa Fe High School and the surrounding area.

"Because of the threat of explsive items, community members should be on the look-out for suspicious packages and anything that looks out of place," the district said via a statement to Twitter.

The district is urging anyone who sees something suspicious to call 911 and wait for authorities to respond.

Multiple authorities, including the FBI, ATF, Texas Department of Public Safety, and local law enforcement are on the ground responding to the situation.Trump Gives a statement on shooting

UPDATE 12:20 p.m. ET, May 18, 2018

In an appearance at the White House this morning, U.S. President Donald Trump said he is monitoring the situation in Santa Fe, Texas, and reiterated that school safety is a top priority.

"My administration is determined to do everything in our power to protect our students, secure our schools, and keep weapons out of the hands of those who pose a threat to themselvs and to others," Trump said. "Everyone must work together at every level of government to keep our children safe."Multiple fatalities texas school shooting

UPDATE 11:30 a.m. ET, May 18, 2018

A shooter at a Texas high school killed at least eight people and injured multiple others on Friday morning. Authorities have a suspect in custody, and said it is no longer an active shooter situation.

Police responded to shots fired at Santa Fe High School in Santa Fe, Texas, after a gunman opened fire around 7:45 a.m. when the school day was beginning. 

“Witnesses described students running from the school as they heard gunshots; they also described hearing an alarm at the school, though the sequence of events wasn’t immediately clear,”according to CNN.

Authorities have not released the identity of the suspect in custody or of any of the victims. However, The New York Times reports that an officer working for the Santa Fe school district as a school resource officer wasinjured during the shooting. 

The shooting is the third school shooting in the past week, and the 22nd mass shooting in the United States since the beginning of 2018, CNN said.

Both the U.S. Bureau of Alcohol, Tobacco, Firearms, and Explosives, and the Harris County Sheriff’s Office are on the scene to investigate the incident. Security Management will continue to update this post as more information is confirmed.

In response to the incident, ASIS International has made soft target and active shooterresources available for security professionals. They include white papers, webinars, book excerpts, and recorded conference sessions designed to help deter, prevent, and minimize future attacks.