Srimad-Bhagavatam: Canto 3 - Chapter 1 - Verse 4
Sanskrit:
सहाचला भुवश्चेलुर्दिश: सर्वा:प्रजज्वलु: ।सोल्काश्चाशनय: पेतु: केतवश्चार्तिहेतव: ॥ ४ ॥
ITRANS:
sahācalā bhuvaś celurdiśaḥ sarvāḥ prajajvaluḥsolkāś cāśanayaḥ petuḥketavaś cārti-hetavaḥ
Translation:
There were earthquakes along the mountains on the earth, and it appeared that there was fire everywhere. Many inauspicious planets like Saturn appeared, along with comets, meteors and thunderbolts.
Purport:
When natural disturbances occur on a planet, one should understand that a demon must have taken birth there. In the present age the number of demoniac people is increasing; therefore natural disturbances are also increasing. There is no doubt about this, as we can understand from the statements of the Bhāgavatam.