'Code yellow' lockdown lifted at Raleigh elementary school

The school alerted the public to the situation on Twitter just before 1:30 p.m.

"Families - we are currently in a code yellow lock down. Please do not come to the school as you will not be able to enter until we are out of code yellow," the tweet said.

According to Principal Kate Williams, the students reported the sighting to a teacher, who brought students inside and police were notified.

For about 30 minutes, the school was locked to visitors while classes continued as scheduled.

Another follow-up tweet said the school was back on a "code green."

Police found nothing suspicious in a search of the campus, which is north of Crabtree Valley Mall in Raleigh. An officer remained on the scene throughout the afternoon, Williams said.

According to the Wake County Public Schools website, if there is something in the community that may pose a threat to the school, such as a bank robbery or police chase in the neighborhood, a "code yellow" community lockdown will be issued.

According to the spokesperson for the school district, a child reported seeing a suspicious person on campus.