Bridgeport (AP) — Metro-North says power problems and a disabled train are causing delays of up to 20 minutes on the New Haven Line in Connecticut.

The rail service says commuters should anticipate combined trains and crowded conditions Thursday morning. They say riders should listen for announcements at the train stations.

Officials say the disabled train and power problems are in the Bridgeport area and began at about 6 a.m. They didn't say when the problems will be fixed.

Many commuters are expressing frustration on Twitter.