WASHINGTON –  A Washington, D.C., school was put on lockdown Monday after a shooting victim staggered inside seeking help.

Police believe the 26-year-old man was shot in a park about three blocks away from the Patricia R. Harris Education Center in southeast D.C., WRC-TV reported.

He went into the lobby of the vocational school at around 10:30am and told employees he needed medical assistance because he had been shot in the side.

Officials said he was conscious and breathing when police officers arrived, according to the Washington Post. He was taken by ambulance to a nearby hospital in unknown condition.

The school was put on lockdown, according to the Post, but WRC reported that classes were not affected.

Police continued to investigate Monday at the park where they believe the man was shot.