Tensions were high outside the Merrylands home of underworld figure John Ibrahim's mother, with media pushed and shoved as deliveries for a high-profile wedding rolled in.

The confrontation came less than 24 hours after the family's bodyguard, Semi Ngata, was found out the front of the Price Street property with a gunshot wound.

In a western Sydney soap opera, John Ibrahim's nephew Sam was set to wed Aiisha Mehajer — the sister of former Auburn deputy mayor Salim Mehajer.

New South Wales Police said there had been "tensions" between the families.

A man confronts ABC News reporter Philippa McDonald outside the home. ( Twitter: @NatashaSquarey )

Mr Ngata, 59, is in a serious but stable condition at Westmead Hospital. The incident unfolded about 10:45pm AEDT Friday.

As a car delivering soft drinks arrived at the property, where the wedding is being held in the backyard, several camera crews — including the ABC — were shoved aside.

Rows of white chairs, as well as shade cloth and a small marquee were set up at the back of the house.

About 70 guests arrived for a ceremony at the home but refused to answer questions from the media.

All of the guests had left by midnight when the lights were switched off.

Aisha Mehajer (L) is the sister of Sydney property developer Salim Mehajer. ( Pictures: Instagram / AAP )

'We heard a noise like someone had been shot'

A neighbour who asked only to be known as "Khatira" said she heard the drama unfold on Friday night.

Semi Ngata (L), and John Ibrahim smile for a photo. ( Instagram )

"When we checked from our window, everyone was there, the police were there," she said.

"We heard a noise like someone had been shot from a gun."

Mr Ngata has had surgery and Khatira said she had seen Mr Ngata walk after being shot.

She described John Ibrahim's mother as a good neighbour.

"They always say hello," Khatira said.