A member of the Islamic Defenders Front has received a three-and-a-half-month prison sentence for vandalizing a mosque run by Ahmadiyah devotees in Bandung, on the eve of Idul Adha last year.

The Bandung District Court found Muhammad Asep Abdurahman, a member of the organization known as FPI, guilty on Tuesday of vandalizing a mosque on the eve of Idul Adha on Oct. 25, 2012.

"[After] reading the indictment, listening to witnesses and defendant, prosecutor demand and lawyer's defense, we, the judges, declare that the defendant has been convincingly proven that he committed vandalism," presiding judge Sinung Hermawan said as quoted by Detik.

om. "Handing down three months and 15 days in jail and ordering defendant to keep staying in jail." The sentence was slightly less than the four months asked by prosecutors.

Muhammad, who is known as Utep, joined dozens of FPI members to attack the mosque in Bandung after the Ahmadiyah devotees refused to stop preparing for the Islamic holiday Idul Adha.

The FPI members destroyed lamps, windows and a fence, causing around Rp 3 million ($309) in damages. There were 10 Ahmadiyah devotees inside the mosque at the time of the attack.

Utep, who was charged with destruction of private property, had previously said that the FPI objected to their activities because such actions were prohibited by the West Java government.