The Jewish Federation of Greater Houston is warning Houston residents about the "growing problem of antisemitism" in the metro after two staff members of the Israeli Embassy in Washington D.C. were killed earlier this week.

Investigators have seized writings that they believe belong to the suspect as they search for a motive in the fatal attack.

"Please pray for the families of the victims. We will bring this depraved perpetrator to justice," DHS Sec. Kristi Noem said.

The statement was signed by groups representing the Orthodox, Conservative and Reform movements as well as other major organizations.

Two members of the Israeli embassy staff -- a couple about to get engaged -- were gunned down outside an event at the Capital Jewish Museum in Washington, D.C., on Wednesday in what the FBI believes may be a targeted attack.

The article, titled "For U.S. Jews, D.C. Museum Killings Deepen Resolve – and Fear," was published by the paper Friday.

"Because of what happened in Washington, D.C., every Jewish organization, every Jewish institution is revisiting their security plans, is reviewing their protocols," said Daniel Goldwin, chief public affairs officer of the Jewish United Fund.

Several Jewish organizations and Chicago officials held a press conference Friday to condemn the fatal shooting of Yaron Lischinsky and Sarah Milgrim, Israeli Embassy staffers, on Wednesday night as they were leaving an event at a Jewish museum.