WALLINGFORD, Conn. (AP) _ Nervous parents throughout central Connecticut stood lookout at school bus stops following the kidnapping at gunpoint of an 8-year-old girl.

The youngster was released unharmed, but the kidnapper remained at large Friday. Police said they were making progress, but declined to elaborate.

A man described as in his mid-30s drove up to a school bus stop Wednesday morning where three girls were standing. He displayed a gun, and ordered them into his car, police said. He grabbed an 8-year-old, but the girl's 5-year-old sister and their friend, 10, managed to flee.

The kidnap victim was released about an hour later more than 10 miles away in Guilford.Police said none of the girls knew the gunman.

Roadblocks were set up Wednesday and Thursday morning on the roads where the kidnapping occurred and where the girl was released.

Wallingford police Sgt. Joseph Curran said the roadblocks ''turned up information,'' but he would not release any details.

In Wallingford and the neighboring town of North Branford, parents were urged to have adults stand lookout at school bus stops, school officials said.

In Cheshire, a worried mother called police Thursday afternoon to report her son was late coming home from elementary school and that a crossing guard had reported seeing him get into a car. Police said it turned out that the child had taken a ride from a friend's mother.

All three girls returned to their elementary school Thursday, where they ''seemed to be adjusting surprisingly well,'' said Schools Superintendent Joseph Cirasuolo.

Cirasuolo said some parents drove their children to school rather than having them take the bus, but that bus usage was down only slightly.