Armed police went in to a Wallasey flat after reports a woman was being held hostage at knifepoint.
Officers were called to the second floor flat in Clarendon Road at around midday.
Police said a 27-year-old woman claimed a man was acting aggressively and when they arrived he refused to leave and made threats to the woman and to the officers outside.
Initially officers armed with tasers responded but as the incident escalated Merseyside police’s specialist Matrix team was called in and a police negotiator began speaking to the man from within the flats building.
Residents in the area spoke of seeing armed police on the scene with the road cordoned off at the Brighton Street end.
There were reports of a series of bangs that some people were suggesting were flash grenades as police went into the flat.
At around 2.20pm, officers arrested a 20-year-old man on suspicion of making threats to kill and false imprisonment.
The woman was checked over by paramedics at the scene and was upset and shaken but unharmed.
A police spokesman said: “Merseyside Police can confirm that officers have arrested a 20-year-old man following an incident inside a flat in Clarendon Road in Wirral on Monday afternoon.
“At 12.05pm patrols were called to the second floor apartment by a 27-year-old woman who said her partner was acting aggressively towards her and was refusing to let her leave.
“Officers tried to speak to the man but his behaviour became more erratic and he threatened to harm himself and the woman with a knife.
“Specialist officers were deployed and forced entry to resolve the situation as quickly and as safely as possible.
Once inside they arrested a 20-year-old man on suspicion of false imprisonment and making threats to kill.
“The 27-year-old woman was not injured but was extremely upset and shaken so was checked over by paramedics as a precaution.”
CREDIT: Trinity Mirror Merseyside