Subway service has resumed along the Bloor-Danforth line hours after flooding made the line inoperable between Ossington and Keele Stations.

Service was suspended after water and silt seeped onto the tracks at Dundas West Station just before 8 a.m. on Tuesday.

In a statement issued at 3 p.m., the Toronto Transit Commission confirmed the subway line was fully operational again, and blamed tunnel work for the flooding.

Damage to the tunnel resulted from work being done overnight. The TTC had to send in a crew to patch a hole in the tunnel before service could resume.

The TTC said more work will take place in the tunnel when the subway closes for the night. Though the tunnel is safe, trains are restricted to travelling 15 km/h between Lansdowne and Dundas West Stations, until the hole can be permanently fixed.

On Tuesday morning, TTC deputy chief operating officer Mike Palmer said silt was covering between six and nine metres of the track, and would have obstructed the subway train wheels if service had continued through the morning rush hour.

Tweets from frustrated commuters show the subway station platforms on the Bloor-Danforth line overflowing with passengers waiting for a train.