According to the online edition of the Jerusalem Post and Czech news portal iDnes:
Israel's incoming police chief, Moshe Karady, told Israeli Army Radio on Sunday that there was a connection between the attack and crime groups known to the Israeli police. Police said they suspected another Israeli crime family, the Abergils, were behind the attempted hit.
"Our intelligence people will collaborate with the appropriate people in the Czech police in order to get to the bottom of the incident and the connection to Israeli criminals."
Israeli police investigators are scheduled to leave for Prague to assist in the investiagtion.
Police spokeswoman Iva Knolova refused to identify the car, but the CTK news agency said it was a white Jeep Cherokee with a license plate from the U.S. state of New Jersey.
The Czech prime minister said investigators had a good description of the man who committed the crime.
Officials said tourists from Britain, Germany, Slovakia and the United States were among those hurt in the blast.
All of the injuries appeared to be slight, said Marek Uhlir, spokesman for Prague's emergency service.
Sunday's explosion occurred at about 12:30 p.m. (1030 GMT) on Na Prikope Street, a popular pedestrian zone in downtown Prague with many restaurants and cafes.
Most of those wounded were foreigners visiting the popular tourist destination, Uhlir said.
Seven people were brought to a local hospital and were treated for wounds to the legs and arms. One woman was operated on for shrapnel lodged in her stomach. A child was among those injured, Uhlir said.