A 2-year-old Blatimore girl suffering from stab wounds was found yesterday in upper Montgomery County, a day after the bodies of her 3-year-old brother and 17-year-old uncle were found at Fort Meade.

Authorities said a 22-year-old Baltimore man was arrested yesterday-allegedly with blood on his hands-in connection with the death of the uncle, and investigators searched unsuccessfully yesterday for two missing relatives of the victims.

The search for the missing persons, a 21-year-old Baltimore woman and her 3-year-old daughter, is expected to resume this morning in the Seneca area of Montgomery County where their wounded 2-year-old relative was found yesterday.

There was no indication, however, that the missing mother and daughter could be found in the search area. "They could be anywhere," said Montgomery County police spokeswoman Nancy Moses.

The 2-year-old girl, Sherrill Peters, was found by a passerby in a wooded area near Violet Locks and River roads sitting by a stream and crying, with her feet in the water.

She was taken to Children's Hospital in Washington, where she was reported in generally good condition, with cuts on her arm and chest.

The bizarre developments began unfolding about 6 p.m Saturday when joggers in a wooded area on the northwestern edge of Fort Meade found the bodies of the 17-year-old and the 3-year-old, whose throat apparently had been cut.

The discovery touched off an intensive investigation, involving Military Police, Army criminal investigators, the FBI, and police from Anne Arundel County and Baltimore. The 17-year-old victim was identified as George Calvin Peters Jr., of the 3500 block of Spaulding Avenue in Baltimore, and the 3-year-old as his nephew, Dominick Earl Peters, of the same address, according to the FBI.

The FBI said the slain 3-year-old and the injured 2-year-old were both the children of Georgetta Peter of Baltimore. They said George Peters, the slain 17-year-old, was Georgetta Peters' brother.

The FBI identified the missing 21-year-old woman as Donzella Peters, also a sister of George Peters. The missing child was identified as Donzella Peters' daughter, Danielle Shoulders, 3. All are Baltimore residents, according to the FBI.

In a statement issued yesterday, the FBI said Donzella Peters, Danielle Shoulders and 2-year-old Sherrill Peters all had been reported missing by relatives to the Baltimore police.

According to the FBI, the three had last been seen about 2:30 p.m. Saturday in the company of the 3-year-old and 17-year-old whose bodies were later found at Fort Meade.

Reportedly all five were on their way to a laundromat in central Baltimore. There was no official account available last night of what happened between the time the five set out and the discovery of the bodies 3 1/2 hours later.

About 7:30 a.m. yesterday, according to the FBI, Kenneth Howard Neal, 22, was arrested in the 3900 block of Woodridge Aveune in Baltimore in connection with the death of the 17-year-old.

He was arraigned on a charge of murder before U.S. Magistrate Clarence E. Goetz and ordered held without bond. Federal authorities said they had jurisdiction because Fort Meade is a government reservation.

According to an affidavit filed yesterday in magistrate's court. Neal had been arrested in the past in connection with an alleged abduction of Donzella Peters, court sources said.

One source in the Baltimore Police Department said Neal may have been a former boyfriend of the missing woman.

The court affidavit, according to the sources, also says that investigators found the 17-year-old victim was carrying a slip of paper bearing the words "red Chevrolet" and listing a license tag number.

The affidavit alleges in addition that Neal had blood on his hands when found by police, the sources said.

The spot near Seneca where Sherrill Peters was found yesterday is more than 30 miles from the site at Fort Meadeswhere her relatives' bodies were found Saturday.

Authorities said they did not know how she was taken to Seneca or how long she had been there, but noted that her clothing had been muddied.

Several hours passed after the girl was found before she was linked to the Baltimore case. The police spokeswoman said a local television station aided in making the connection.