Contributions to powerful gun lobby group the National Rifle Association (NRA) increased significantly last month in the wake of a mass shooting at a Florida high school.

Reports from the Federal Election Commission show donations to the NRA's Political Victory Fund tripled from January to February. On 14 February, a shooter armed with an AR-15 rifle killed 17 people at Marjory Stoneman Douglas High School in Parkland, Florida.

The data indicates that as student survivors of the shooting began mobilising a mass movement calling for stricter gun control laws, gun advocates took action in a different way.

In January, the NRA collected almost $248,000 (£176,800) in individual contributions. In February, the gun-rights lobbying group received more than $779,000 (£555,000).

The Political Victory Fund contributes money to gun-rights friendly candidates that the NRA has endorsed.

The nonpartisan Center for Responsive Politics, which tracks political spending, tracked donations of $200 or more by individuals in the days before and after the Parkland shooting.

In the two weeks following the attack on 14 February, such donations to the NRA doubled from the previous two weeks.

March for Our Lives – in pictures Show all 13 1 /13 March for Our Lives – in pictures March for Our Lives – in pictures Demonstrators chant during the protest for gun legislation and school safety AP March for Our Lives – in pictures Trevon ‘Tre’ Bosley, 19, of Chicago, the brother of Terrell Bosley who was killed in 2006 in a case of mistaken identity, speaks during the rally AP March for Our Lives – in pictures Marjory Stoneman Douglas High School student Delaney Tarr speaks at the rally AFP/Getty March for Our Lives – in pictures Protestors line the streets in Washington Getty Images March for Our Lives – in pictures People arrive for the March For Our Lives rally against gun violence in Washington, DC AFP/Getty March for Our Lives – in pictures Protestors carrying placards in Washington AFP/Getty March for Our Lives – in pictures Protestors hold up placards in Washington AFP/Getty March for Our Lives – in pictures Schoolchildren wear targets ahead of the rally Getty March for Our Lives – in pictures Attendees congregate in preparation for the march Getty March for Our Lives – in pictures Students brought a host of innovative placards AFP/Getty March for Our Lives – in pictures The movement’s main demand is the banning of assault rifles Getty March for Our Lives – in pictures Since the Florida shooting, students have called for urgent gun reform AFP/Getty March for Our Lives – in pictures In the wake of the Florida attack, President Donald Trump called for teachers to be armed AFP/Getty

The centre also found that the number of people contributing in the seven days after the shooting increased almost sixfold from the week before.