Chicago transit on alert after Moscow bombings

Regional transit agencies are on the watch after two women detonated bombs in Moscow subway stations, killing at least 38 people.

Both Chicago Transit Authority and Metra officials said the agencies were on heightened alert status.

"We're in constant communication with U.S. Homeland Security," Metra spokesman Michael Gillis said. "We are taking appropriate actions to maintain the security of our passengers."

A CTA spokeswoman said passengers should be reminded that their vigilance and awareness is an important part of safety precautions. If commuters see anything suspicious, they should alert transit staff or call 911, she said.

Pace spokesman Patrick Wilmot echoed that advice. "The 'If you see something, say something,' campaign continues to provide the best advice for safety while on board buses and trains," he said.

The suicide bombings occurred in separate locations in parts of downtown Moscow during the morning rush hour.