The National Center for Seismology said the quake struck at 10:23 pm, with its epicentre located 13 km deep Uttarakhand earthquake What could have triggered magnitude tremors Key points and original sources are listed below.

• The National Center for Seismology said the quake struck at 10:23 pm, with its epicentre located 13 km deepS1

• Uttarakhand earthquake What could have triggered magnitude tremorsS2

• Earthquake tremors were felt in Delhi and its adjoining areas on Tuesday night, with people taking to social media to share their experiences.S3S5

• People on social media reported feeling tremors.S4

• magnitude earthquake hits Uttarakhand tremors felt in DelhiNCRS6