The incident happened near the Lake Cook Road train station in Deerfield, according to Metra.
Deerfield police said officers were dispatched around 9:11 a.m. regarding a person being struck by a south bound train.
Inbound trains were moving intermittently but are not stopping at the Lake Cook Road station.
Outbound movement from Lake Forest to Fox Lake was halted.
No other information has been released.
This is an ongoing investigation.
This is a developing story. Check back for updates.