An alert school crossing guard and her husband helped lead police to a man suspected of exposing himself to a child near a bus stop earlier this week, police said.

Police had warned school officials about the man, who was suspected of exposing himself to a 14-year-old girl Tuesday at a bus stop in northern Lawrence and of following an 11-year-old girl near Hillcrest School.

On Wednesday, a crossing guard near Pinckney School spotted a man matching the suspect’s description.

Her husband followed the suspect in his car to the Clinton Lake dam, where police arrested the 36-year-old man on suspicion of lewd and lascivious behavior. He was ordered to appear in court May 11.