LENEXA, Kan. (AP) _ Law enforcement officials say a 3-year-old boy who apparently let himself out of his apartment in a Kansas City suburb has been found safe.

Lenexa police say the boy was found shortly before 8 a.m. Thursday in an apartment next door to the apartment where his family lives.

The boy's parents called police about 4:45 Thursday morning after finding the boy and his dog gone.

Police, fire officials and neighbors helped with a frantic search because the boy was only in his pajamas in frigid weather.

Lenexa police spokesman Dan Friesen says the boy had let himself out of the apartment in the past, using a step stool to reach the door handle.