Transit officials say subway service has been restored, but major delays continue after a Brooklyn manhole fire shut down some subway lines.

NYC Transit spokesman Paul Fleuranges says the G, F and 4 lines are now back in service, but with significant delays. The 2 and 3 lines are also running behind schedule.

Fleuranges says no passengers were stuck on subway trains after the fire, which happened around 5:45 p.m. in the Boerum Hill neighborhood. He says all trains were able to move - but slowly -and all have lights and air conditioning.

Consolidated Edison spokeswoman Elizabeth Clark says it's not clear whether Sunday's sweltering heat was a factor in the fire.

Fleuranges says the transit agency is trying to hook up generators in the affected areas. Clark says Con Edison crews are working to restore power.