NEW YORK A crew controlled by the Crips street gang made $1 million a year dealing drugs that were sometimes delivered in toy cars and trucks, authorities said.

In one instance, a child was used to take drugs to an undercover officer, police said Thursday. Other times, they said, suspects made deals on school playgrounds.

The eight-month undercover investigation resulted in charges against 96 people, half of whom lived in a cluster of housing projects in the Queens borough. Police had arrested 81 of the suspects; the rest were being sought.

Prosecutors said some suspects were affiliated with the Crips, including one charged with shooting a 15-year-old to death last year. Crips crews, known as sets, have proliferated in the city, they said.