An Arlington grand jury indicted four men on gambling charges yesterday in connection with an alleged sports betting ring in the Northern Virginia Vietnamese community, prosecutors reported.

Commonwealth's Attorney Henry Hudson said the circuit court grand jury indicted Nuoi Hoang, Chau Tran and Nguyet O'Rourke on charges of conspiracy and conducting an illegal gambling operation. Long Nguyen was charged with conducting an illegal gambling operation, Hudson said.

He said the charges stemmed from a raid Oct. 28 on nine businesses and homes by Arlington and Fairfax County police, part of an investigation of an alleged sports betting operation based in Arlington's Clarendon section.

Police said they seized betting slips and more than $200,000 in gold, jewelry and cash in the raid.

According to police affidavits filed in circuit court, bets on college and professional football games were accepted on weekends this fall. The affidavits said the information was based on statements by an informant who observed bets being placed, and on wiretapped conversations.

The "office" of the alleged bookmaking ring was in O'Rourke's home at 7910 Charles Thompson La., Annandale. The affidavit said several Vietnamese business owners in Clarendon took football bets each week and called them in to O'Rourke's house.