Person arrested following police response at Grand Central Terminal, MTA says

A person is under arrest and several train lines delayed after a police response at Grand Central Terminal, the Metropolitan Transit Authority said.

It happened just after 8 a.m. Wednesday. 

The MTA said a woman was acting erratically on the train pulling into Grand Central, and another passenger pulled the emergency stop cord. Train passengers began self-evacuating from the train, causing the MTA to shut the power off.  

Delays were reported on the Harlem, Hudson and New Haven Metro-North lines due to police activity at the terminal, according to the MTA. 

Four passengers were evaluated for stress, but no injuries were reported, according to the MTA. 

This is a developing story. Check back soon for more information.