The Israeli police on Tuesday arrested a woman accused in a poisoning case that killed a man and injured two others.
On Monday, a man was killed and two others injured in the southern Israeli city of Dimona after he was poisoned by the woman.
The victim died later in hospital.
The man, whose name has not been released, was not a suspect in the case and had been hospitalized with a severe stomach ulcer.
The woman, whose identity has not yet been released and who is a resident of the city of Qalqilya, allegedly injected the man with the deadly toxin before she fled the scene.
Her arrest is being treated as a possible terrorist attack, police said.
The attack comes a day after a Jerusalem woman was shot and wounded by a suspected Palestinian attacker, who fled the spot in the same area where she was shot.
In the aftermath of the deadly incident, a group of Israeli police officers carried out a series of raids in the Qalqa and Qalayim neighborhoods of Jerusalem, the southernmost city in Israel.
The police said they detained three people for questioning and seized a firearm and ammunition.
They also confiscated a laptop computer believed to have been used to carry out the poisoning.
They are looking for the man, whom they are not naming because he is a suspected terrorist, and have also launched an investigation into the circumstances of the shooting.
In addition to the case of the Qaliq man, police have launched a separate investigation into a stabbing attack that killed three people at a bus station in Jerusalem’s Old City.
A Palestinian attacker stabbed and wounded three people in the Old City on Monday evening, according to police.
The attack occurred at a checkpoint outside a restaurant in the area of a busy shopping mall, and two people were wounded in the attack.
Police have launched an intensive search for the suspect.
He was detained and is now in custody.
The suspect is expected to face charges in the murder case as well.
In response to the latest attacks, Prime Minister Benjamin Netanyahu ordered an increased police presence in Jerusalem and vowed to take action against the assailants.
Netanyahu also ordered a security crackdown against the “terrorists” in the capital and vowed that Israel will remain vigilant.