Some Metra service alerts undelivered because of glitch

Some Metra riders aren't getting notices about train delays via email and Twitter because of a glitch.

The commuter rail agency referred users to metrarail.com and the Ventra app for real-time train information.

"Our staff is working around the clock to fix this issue because we know our customers depend on these alerts for critical travel information," said Metra Executive Director and CEO Don Orseno in a message to customers. "We apologize for any inconvenience you experienced as a result of this problem. We will keep you posted as this issue is resolved."

The glitch affects about 100,000 customers who signed up to get service alerts. Metra representatives didn't know how long it will take to fix the problem.