One police officer and three other people were killed in a series of shootings in the US state of Wisconsin yesterday, and one suspect has been in custody, local media reported, according to China's Xinhua news agency. 

The shooting spree apparently arose from a domestic dispute at a bank in Marathon County, then at a law firm and an apartment complex, Fox News quoted officials as saying.

Dozens of police and emergency vehicles first rushed to a Marathon Savings Bank in the village of Rothschild and found two people had been shot dead.

Another shooting was reported about 10 minutes later at a law firm in nearby Schofield City before a third one occurred in an apartment complex in Weston at around noon.

A standoff between police and the suspect lasted for several hours near the apartment complex. The exchange of gunfire ended at about 5pm (2300 GMT).

Investigations are under way, police said. 

- Bernama