you re live in the cnn newsroom. i m jim acosta in washington and we are following breaking news at the top of this hour. a hostage situation is unfolding right now on the sabbath at a texas synagogue. the fbi and texas department of public safety are conducting s.w.a.t. operations in colleyville texas at the congregation of beth israel there in colleyville, texas. police are evacuating the residents from the media. the white house is monitoring the situation. let s bring in shimon prokupecz, julia, josh campbell and rabbi joshua stanton, senior fellow at the national jewish center for learning and leadership who was so kind to stay with us. shimon, i understand you have new information. so, we believe, jim, according to authorities there, there are four hostages inside the synagogue that this man has taken hostage.