Piper aztec (PA27) pilot reported a near midair collision with previously reported traffic by ATC.

Attributes
ACN	1630586
Time
Date	201903
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	PA-23-250 Aztec
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Route In Use	VFR Route
Flight Plan	VFR
Aircraft 2
Make Model Name	Cirrus Aircraft Undifferentiated
Flight Phase	Cruise
Person 1
Function	Single Pilot Captain
Qualification	Air Traffic Control Fully Certified Flight Crew Instrument Flight Crew Multiengine Flight Crew Commercial
Experience	Air Traffic Control Non Radar 5 Air Traffic Control Radar 5 Flight Crew Last 90 Days 60 Flight Crew Total 760 Flight Crew Type 70
Events
Anomaly	ATC Issue All Types Conflict NMAC
Miss Distance	Vertical 100

Narrative:

I was doing north and south survey lines about 14 miles north of ZZZ at 4;800 feet. Approach told me traffic cirrus 5 o'clock northwest bound at 4;400 feet and I acknowledged it to ATC. Then; ATC told the cirrus traffic 12 o'clock at 4;900 feet. The cirrus pilot said that he was close to me and at almost same altitude; so he said that he's going to make a sharp right turn. After few seconds; he flew right under me at [around] 50-200 feet below me. I didn't see the cirrus till he passed under me but the cirrus pilot maneuvered well to avoid me. I think the cirrus' transponder was little off than it's supposed to be because he was not at 4;400 [feet]. ATC should've informed us little earlier because the whole thing happened within 2 minutes of acknowledgment.

Original NASA ASRS Text

Title: Piper Aztec (PA27) pilot reported a NMAC with previously reported traffic by ATC.

Narrative: I was doing north and south survey lines about 14 miles north of ZZZ at 4;800 feet. Approach told me traffic Cirrus 5 o'clock NW bound at 4;400 feet and I acknowledged it to ATC. Then; ATC told the Cirrus traffic 12 o'clock at 4;900 feet. The Cirrus pilot said that he was close to me and at almost same altitude; so he said that he's going to make a sharp right turn. After few seconds; he flew right under me at [around] 50-200 feet below me. I didn't see the Cirrus till he passed under me but the Cirrus pilot maneuvered well to avoid me. I think the Cirrus' transponder was little off than it's supposed to be because he was not at 4;400 [feet]. ATC should've informed us little earlier because the whole thing happened within 2 minutes of acknowledgment.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.