Gmail — Gmail account hacked anjana

Address:

Kollam, Kerala, 691601

My Gmail account got hacked. I am using an android phone and today morning at 1 53 AM I have got notification in my mobile for new mail from [protected]@accounts.google.com and that i have logged to android and I have 23 new emails. But when I checked my Gmail I didn't find any mail from [protected]@accounts.google.com even though there was a notification in my phone. This is a serious crime that some one used my mailid to send and receive mails and deleted it including the Gmail activity confirmations. Pls take action to find the hacker
There is serious threat to my life, money and property.