The jailed assassin of Israeli Prime Minister Yitzhak Rabin was caught Thursday trying to give his wife a plastic bag of his sperm so the couple could have a child, according to the Israel Prisons Authority. The authority said earlier this week that the killer, Yigal Amir, could have a child by artificial insemination with his wife, Larissa Trimbobler. But the couple was told they could not start the process until the prison sought medical guidance, said Orit Stelser, a spokeswoman for the prisons authority. Amir, serving a life sentence without parole for the 1995 assassination, married Trimbobler by proxy in 2004. The prison has not allowed them conjugal visits. When Trimbobler arrived to visit Amir Thursday, guards caught her with a test tube, which they seized, Stelser said. The visit proceeded until wardens caught Amir handing a plastic bag containing his sperm to Trimbobler, she said. Trimbobler will not be charged in the incident, and Amir may receive a minor punishment, Stelser said. Amir will be allowed later to give a sperm sample to Trimbobler in an organized manner, she said. "But he must wait a few more days," Stelser said. "There are rules in prison."