Yahel Avigur, 19, was sentenced to 28 days in a military prison on Sunday after serving an initial 14-day sentence last November.

His family said he would likely be sent to prison several more times upon his release, for his refusal to perform his military duties.

All male Jewish Israelis are obliged to serve in the army for three years from the age of 18 and women for 21 months.

Orthodox Jews are exempt for religious reasons.

Only women are can opt for social work in place of military conscription.

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