Digital sales of tracks by Solange Knowles have increased after CCTV footage of the singer allegedly attacking Jay Z was leaked, reportswebsite HipHopDX.

According to data by Nielsen SoundScan, Solange’s sales rose from 600 to 2,000 the week ending 18 May. Neilsen does not report which tracks sold the most, but the boost in sales could have been prompted by publicity following news of an altercation between Solange and her brother-in-law, Jay Z, in a lift while leaving the Met Ball in New York.

On 15 May, Beyoncé, Jay Z and Solange released a statement:

Jay and Solange each assume their share of responsibility for what has occurred … They both acknowledge their role in this private matter that has played out in the public. They both have apologised to each other, and we have moved forward as a united family.significantly lower than those of her sister’s. According to Nielsen Soundscan, Solange’s debut album, Solo Star, sold 112,000 copies and dropped off the chart five weeks after its debut. Her second full-length recording, Sol-Angel and the Hadley St Dreams in 2008, was her first US top 10 album, but reached only 180 on the UK albums chart. Losing You, from the Dev Hynes-produced EP True, reached No 22 in the UK singles chart.

According to interviews, the singer’s next album will be released in 2014. “I’m actually trying to give myself a deadline this time around,” she told Billboard last year. “One of the pros of being [an] independent [musician] is having that space and time. But it’s also a major con when you don’t set aside a deadline and keep going. When you have a goal in mind, you definitely stay motivated.”