A woman is being held hostage by a man armed with a gun who has locked himself in a house in Greater Manchester.
Officers have been at the property in Pemberton Way in Shaw, Oldham, since about 03:15 BST.
Two children who were earlier in the house are now safely outside, Greater Manchester Police said.
A number of local residents have been evacuated from their homes “as a precaution”, the force added.
Ch Supt Neil Evans said: “We are continuing in our efforts to bring this situation to a safe resolution and we have police negotiators at the scene currently engaging with the man.
“Our number one priority is the safety of all those involved, as well as other members of the public.”