It's a blowout at the box office.

Fast & Furious 6 is revving past The Hangover Part III in the No. 1 position at the Memorial Day weekend box office.

Universal Pictures' sixth installment of its muscle-car franchise featuring Vin Diesel and Paul Walker debuted with $98.5 million domestically from Friday to Sunday, according to studio estimates.

Meanwhile, the final edition of the raunchy Warner Bros. comedy trilogy starring Zach Galifianakis, Bradley Cooper, and Ed Helms opened with $42.1 million in the No. 2 spot.

Universal estimates that by the end of the four-day holiday weekend Monday, Fast & Furious 6 will have pulled in $122.2 million domestically and $275.5 million worldwide. That would give it the second-biggest opening of the year, behind Iron Man 3. Paramount Pictures' sci-fi sequel Star Trek: Into Darkness earned $38 million at No. 3 in its second weekend at the box office, and the Fox animated film Epic opened at No. 4 with $34.2 million.

Overall domestic receipts for the four-day holiday weekend are expected to beat 2011's record-breaking $276 million. Revenue is predicted to total $323 million, 15 percent above Memorial Day weekend in 2011, when The Hangover Part II delivered a $103.4 million debut.

A super sing in Russia

More than 4,000 Russian singers performed outdoors in St. Petersburg, Russia, on Sunday with the aim of setting a world record for the largest choir.

The 4,335 singers of all ages, from nearly all the city's professional and amateur choirs, sang from the steps of St. Isaac's Cathedral before thousands of spectators under intermittent rain.

Spectators sang along during the one-hour concert, which included some of the country's most patriotic songs. Yulia Alshenina, whose daughter sang in the choir, said the concert was so moving she could not hold back tears.

Was Amanda assaulted?

Police were looking into allegations made by actress Amanda Bynes that NYPD officers assaulted her sexually when she was charged with heaving a marijuana bong out the window of her 36th-floor Manhattan apartment.

The 27-year-old former child star first alleged during her arraignment on Friday that police entered her apartment illegally after being called to her midtown building. But a Twitter message believed to be from the actress posted Saturday alleges her arresting officer also assaulted her sexually.

The Police Department's Internal Affairs division is investigating, "as it would with any such allegation, regardless of its credibility," an NYPD spokesman said.

The Twitter handle used to make the sexual-assault allegations Saturday does not appear to be verified by the social network, but Bynes' friend and former Hollywood publicist, Jonathan Jaxson, said the tweet was made from Bynes' account. Twitter did not immediately return a request for comment.

Bynes was arrested Thursday after building officials called police complaining that she was rolling a joint and smoking pot in the lobby. Officers went to her apartment, where they saw heavy smoke and a bong on the kitchen counter. They said she tossed the bong out the window in front of them, prosecutors said.

Contact "SideShow" at sideshow@inquirer.com. This column contains information from Inquirer wire services.