Despite opposition from government prosecutors, an 18-year-old man was released from custody on personal recognizance yesterday after being charged with armed robbery Tuesday at a District of Columbia saving and loan association.

D.C. police have charged Tyrone Briscoe, of 212 I St. NW, in the 10 a.m. armed robbery Tuesday at the Northwestern Federal Savings and Loan office at 1617 K St. NW.

Meanwhile, in unrelated incidents, two Washington banks were robbed of undisclosed amounts yesterday as the number of financial institutions robbed in Washington this year reached 68 to date, 12 more than were committed during all of last year, D.C. police said.

Assistant U.S. Attorney Bobara Liles, the prosecutor in yesterday's bond hearing, told U.S. Magistrate Jean Dwyer that Briscoe had an extensive juvenile criminal record that she said included robbery and theft.

"I felt that the government's case was very strong, there were eyewitnesses, and photos were taken during the robbery," Liles said. "I asked for $10,000 bond. The main issue was whether he would show up in court. It's my guess that the judge understood that he would."

D.C. police officials, meanwhile, were seeking a woman in her early 20s in the 2:50 p.m. robbery yesterday of the Hemisphere National Bank office at 815 Connecticut Ave. NW.

Witnesses told police that the woman, who appeared unarmed and was wearing a sweater and a skirt, gave a bank teller a note demanding money. When she received the money, police said, she fled on foot.

According to police, a bank official followed the woman into an alley at the rear of the bank and observed that a special red dye bag included in the money the woman got from the teller, exploded, marking the bandit with the dye.

Police said the woman resumed her flight, but left a pocketbook behind, also covered with the dye.

Police said they believed the woman, based on descriptions police received from witnesses Tuesday, to be the same person who took an undisclosed amount of money from the American Security Bank office at 911 F St.NW. Tuesday. That woman was dressed similarly and also handed that teller a note demanding cash.

Police said an unidentified man robbed the National Bank of Washington branch at 2000 Martin Luther King Ave. SE yesterday, taking an undisclosed amount of money. According to police, the man gave a teller a note demanding money at about 2:15 p.m., gathered the money in a paper bag and then fled on foot.