James Harden hit out at what he perceives to be a lack of consistency from the officials following the Brooklyn Nets' 136-125 loss to the Minnesota Timberwolves.

The nine-time NBA All-Star endured a frustrating time at Target Center as he got to the line only four times and scored 13 points.

Only once this season, against the Phoenix Suns in November (12), has Harden – who shot four-of-13 – ended a game with fewer points.

But Harden feels as though he has been on the end of some tough treatment from referees.

"I don't know. I don't even want to talk about it," he told reporters. "But it's definitely – when I get to the basket, it's the same calls the guys are getting. 

"Obviously, you can't call all of them. But there's ones where there's clearly stiff-arms and trips and things like that. On the other end, there's no consistency. So it's frustrating."

Asked what explanation he has had regarding certain calls going against him, Harden said: "Nothing. Honestly, nothing. 

"Like [officials say], 'I didn't see it,' or 'I didn't think it was a foul.' But it's clear. It's extremely clear. I don't want to talk about it. I just got to keep going. It's not going to stop me. 

"I'll keep on going to the basket, keep being aggressive and keep making plays for my team."

The Timberwolves were awarded 31 free throw attempts compared to 15 for the Nets, who had 29 personal fouls called against them compared to 17 for their opponents.

Nets Head coach Steve Nash echoed Harden's complaints as he also took aim at the officials.

"I think there's nights where it's fair, and even including the points of emphasis this year," Nash said. "Then there's other nights where it feels like he gets targeted a little bit. 

"It just automatically gets lumped into that point of emphasis where he is creating the foul, which is not always the case at all."

NBA officials have clamped down on offensive players who attempt to create contact and draw fouls from opponents, which Nash claims Harden has become the biggest victim of.

"I think it's been well-documented that he's a poster child," Nash said. "I think the start of the year was rough – they were really trying to correct the point of emphasis. 

"I think they overcorrected. Now we [have] come back to the middle, but tonight was one of those nights where I felt like some of the calls that should go his way didn't."

The Nets allowed 30 points in every quarter for the second time in 10 days, when losing 130-109 to Oklahoma City, as they fell behind the Miami Heat in the Eastern Conference.

Harden's treatment was the big talking point from the Timberwolves loss, but Kyrie Irving backed his team-mate to adapt.

"I think teams have made adjustments, the referees have made adjustments, and now we have to make adjustments," said Irving, who led the Nets with 30 points.

"He goes to the paint aggressively and we want him to continue doing that. He's going to be James. We know who James is – we know he's going to be himself.

"But the whistle can go either way night to night. And depending on the [officiating] crew we have, I think that also has an effect on it.

"We just want to start off the game with a consistent whistle. And when he's going in there and he's creating some contact, we feel like he deserves that respect."