Best supporting actress:

• Patricia Arquette, Boyhood

• Laura Dern, Wild

• Keira Knightley, The Imitation Game

• Emma Stone, Birdman

• Meryl Streep, Into the Woods

Best supporting actor:

• Robert Duvall, The Judge

• Ethan Hawke, Boyhood

• Edward Norton, Birdman

• Mark Ruffalo, Foxcatcher

• JK Simmons, Whiplash

Interstellar leads the pack at the half-way stage with four nominations, but it is unlikely to feature in the acting and directing categories.

American Sniper is second with three nods.

The first tranche of nominations have ended. The next set - with all the major prizes - start in three minutes time.

Surprisingly, The Lego Movie has been snubbed in the best animated film category.

Best animated film:

• Big Hero 6

• The Boxtrolls

• How To Train Your Dragon 2

• Song of the Sea

• The Tale of the Princess Kaguya

Best original song:

Everything Is Awesome, Lego Movie (Music and lyrics by Shawn Patterson)

Glory, Selma (John Legend and Common)

Grateful, Beyond the Lights (Diane Warren)

I'm Not Gonna Miss You, Glen Gampbell... I'll Be Me, (Glen Campbell)

Lost Stars, Begin Again (Adam Levine)

Alfonso Cuaron and JJ Abrams are on stage - here we go with the nominations...

Scott Feinberg tweets from the nominations, external: "The wait begins to see which of my friends this year will try to see if my phone's ringer is on during the Oscar nominations announcement..."

The Oscar nominations will be announced in two swathes, starting at 13:30 GMT.

The first section, announced by Gravity director Alfonso Cuaron and Star Wars' director JJ Abrams will include best animated film and best original song as well as the technical and design categories.

The second section, announced by actor Chris Pine and Academy boss Cheryl Boone Isaacs, will include the major awards such as best actress, best actor and best director, before concluding with best picture.

Live video of the announcements will be posted at the top of this page.

There has been a lot of reaction to a fact in our Oscars A-Z, revealing snipers are stationed outside the ceremony. Here's a sample:

Tom Dickson tweets, external: "Snipers outside? Isn't there enough sniping from the losers inside?"

Tom Green tweets, external: "This is in case Adam Sandler tries to get in."

And Robert DeNiro @TribecaFilmsUSA tweets, external: "Snipers, outside the Oscars? What are you kidding? I know the acting & the scripts are terrifyingly crap but that's extreme!" (we presume it's not that Robert DeNiro).

Jaime Gonzalez
BBC Mundo, Los Angeles

"#Oscars2015 nominations live, external from the Samuel Goldwyn Theater in LA."

Some other stories around today you may have missed:

• A model who claims she was drugged and sexually abused by Bill Cosby at the Playboy Mansion six years ago has met with police in Los Angeles to determine whether criminal charges can be filed.

• Singer Tulisa loses an appeal against her conviction for assaulting a celebrity blogger at the V Festival in 2013.

• Controversial play Truth, Lies and Diana, about Princess Diana's death, is called "patchy", "confused" and "clueless" by reviewers.

• Three lucky Blue Peter viewers are being offered the chance to become young spies as part of a competition involving MI5.

Image source, Presser

The Oscars haven't even happened yet, but this year's film festival season is about to kick off.

Robert Pattinson film Life and Dame Helen Mirren's Woman in Gold are to premiere at the 65th Berlin Film Festival, external next month. Directed by Anton Corbijn, Life is inspired by the friendship between Magnum photographer Dennis Stock (Pattinson) and actor James Dean (Dane DeHaan) after Stock was commissioned to snap the star for Life magazine in 1955.

Also based on a true story, Woman in Gold sees Dame Helen star as octogenarian Jewish refugee Maria Altman, who takes on the government to recover artwork she believes rightfully belongs to her family.

Mariah Carey has announced her first-ever Las Vegas residency. The 45-year-old will play at Caesar's Palace, replacing Celine Dion who put her career on hold "indefinitely" last summer to care for her ill husband.

Carey made the announcement in a pre-recorded interview on The Ellen Show, external, saying her show at The Colosseum would be inspired by her album, Number 1's. "This is now the updated version with 18 of them," she added.

Regan Morris
BBC News, Los Angeles

"Journalists lining up, external at Academy for Oscar nominations. Surreal going to work when bars closing."

Image source, AP

Never mind Oscar nominations, it's National Hat Day! So what better day for Pharrell Williams's famously high hat to move into the Grammy Museum, where it will be on display until 15 March in celebration of "the Grammy effect".

The Vivienne Westwood hat - credited with sparking a hat-bothering trend - is on loan from US restaurant chain Arby's, which bought the hat for $44,100 (£27,000) when Williams auctioned it on eBay last year.

Ian Rankin tweets, external: "Grim news about Ruth Rendell's stroke. Comes so soon after we lost P D James. Wishing her a full and speedy recovery."

"Our #OscarNoms excitement is only rivaled by our anxiety about potential tweet typos," tweets, external The Academy of Motion Picture Arts & Sciences.

We share your pain.

Chris Pratt tweets, external: "I still can't believe Harvard University has awarded me the Hasty Pudding Man of the Year Degree in Medicine."

He might have read that award title, external wrong...