Winnipeg police said four people have been charged after officers searching a home found several homemade firearms -- often called zip guns.

It happened Wednesday in the 500 block of Furby Street, where officers used a warrant to search a home.

Police said the devices found were in various stages of completion and parts for making zip guns were also found, along with pieces of ID and a retail membership police said were possessed unlawfully.

Police said one suspect also had a syringe full of morphine.

Both police and community groups have said the number of zip guns being found in Winnipeg has spiked in recent years.

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Police arrested four people on Wednesday, charging three with offences that include weapons trafficking.

The suspects are in custody, police said.