An alert has been sounded here following 1993 Mumbai serial blast convict Yakub Memon's hanging in Nagpur jail on Thursday.
Delhi Police has beefed up security.
Delhi Police PRO Rajan Bhagat told IANS that police personnel are already vigilant and watchful after the terror attack in Punjab and the alert is being maintained.
Additional police and other security personnel have been deployed around key public places, he said.
Memon was hanged after several of his court appeals and clemency petitions were rejected by various courts.
